Firearms and ammunition

by Rick Moore

SUMMARY
Manufacturer:
Intratec Firearms, Inc.
Models:
Standard model “TEC DC-9″
Short barreled model “TEC DC-9M”
NOTE: Early DC-9’s are labelled “TEC-9″
Type:
Single-action autoloading pistol, blowback operated
Caliber:
9mm Luger (aka 9mm Parabellum or 9mm x 19mm)
Capacity:
20 or 30 rounds with factory magazines
up to 50 rounds with aftermarket magazines
Sights:
Front: Fixed blade
Rear: Fixed notch

Dimensions:
================================
!                     !  Barrel    ! Total      !      Weight !
!                     !  Length ! Length    !    (empty) !
================================
TEC DC-9    !      5 in.    ! 12.5 in. !     50 oz.     !
TEC DC-9M !     3 in.    ! 9.5 in.    ! 44 oz.         !
================================

INTRODUCTION

The TEC DC-9 is a low priced autoloading pistol made by Intratec Firearms of Miami, Florida. In keeping with the low price, the DC-9 also has a reputation for low quality construction (more about that later). As for styling, the DC-9 looks like nothing else so much as a miniature submachinegun, although it is not a fully automatic firearm. The magazine well is located in front of the trigger, and the gun features a threaded barrel, a perforated heat shroud, and a long 30-round magazine, all of which contribute to the SMG-like appearance. The DC-9 is blowback operated and chambers the 9mm Luger cartridge (also known as 9×19mm or 9mm Parabellum).

The TEC DC-9 was originally called the “TEC-9″, but was renamed to “DC-9″ about a year later, probably in response to a widely publicized crime where some deviant blasted his way through a crowded Washington DC office building with a TEC-9 in each hand. For purposes of this FAQ, the terms “DC-9″ and “TEC-9″ are interchangeable.

The DC-9 bears the dubious honor of having been named explicitly in the 1994 “assault weapons” ban, as well as being listed in ninth place on the BATF list of “Top 18 Handguns Used by Criminals”. It is legal under current US law for private individuals to own a DC-9 that was constructed prior to the effective date of the ban, although certain states or localities may have more restrictive laws. As always, check your local firearm laws.

CONSTRUCTION

For a handgun, the DC-9 is very large and very heavy. It is over a foot in length and weighs in at over four and a half pounds when loaded (heavier than some rifles). It is certainly not what most firearm enthusiasts would describe as a concealable weapon. Most of the larger metal components of the pistol are constructed of plain heavy steel. Here there are no exotic alloys as one might find on many other modern pistols, and this contributes to the extraordinary size and weight of the DC-9. The upper-receiver is built around a large tube of heavy guage steel within which most of the other components of the gun are mounted. In this regard it resembles a miniature Sten or Owen (as does the mechanism inside). The barrel is permanently mounted to the foreend of the tubular receiver, and the portion of the tube that extends over the barrel is perforated and acts as a heat shroud to prevent the operator from burning his/her hands on a hot barrel. The bolt, striker, mainspring, etc, are mounted inside the rear portion of the receiver tube, just aft of the opening through which the magazine protrudes when assembled. The other obvious opening in the upper receiver assembly is the ejection port, which is covered by a portion of the bolt when closed. The lower receiver / grip assembly is made of a single peice of thick molded plastic resin. The plastic is slightly flexible to allow for some strain and abuse. The magazine catch, trigger, and sear are the only components of the gun that are attached to the lower receiver. All other components are mounted to the upper, and there are very few parts to begin with. The grip portion of the lower receiver is considerably larger than the grips found on most other handguns, so persons with small hands may have trouble with it. The gun has a hefty, industrial strength feel to it, as if it could be actively pounded on, dropped, used as a jack stand, run over by a division of tanks, and still keep on ticking. The DC-9 has been criticized for its cheaply finished construction, and some of the most common complaints include:

OPERATION

The DC-9 operates on the elementary blowback principle, briefly described here for those who are not familiar with firearm operation. When the pistol is fired, the cartridge casing, and hence the (non-locked) bolt, are pushed backward by the force of the expanding gasses while the bullet proper is propelled forward through the barrel. As the bolt moves rearward, the mainspring is compressed toward the buffer at the rear of the receiver. The spent casing is ejected as the bolt slams the case into the tip of the ejector. When the bolt reaches the limit of its rearward travel, the mainspring pushes the bolt forward again. As the bolt moves forward, it pushes a new cartridge from the top of the magazine, up the feed ramp, and into the firing chamber at the rear of the barrel. The gun is ready to fire again as soon as the bolt returns fully to the forward position. Blowback-operated firearms are sensitive to the power of the cartridges used. If the pressure is too low, the bolt will not be driven rearward with enough force to complete the ejection of the spent cartridge and/or proper loading of the new cartridge. If the pressure is too high, the bolt may be driven back too fast and too far, resulting in similar symptoms as above, premature wear of the mainspring, or even serious damage to the gun. This is generally not a problem with regular factory ammunition, but be careful with reloads and high pressure (i.e. “+P+” etc) ammo. The DC-9 does seem to be able to handle hot surplus NATO submachinegun ammo without any difficulty. The loading, cocking, and unloading of the DC-9 is similar to many other magazine-fed pistols. For readers not familiar with this or similar firearms, the following details are provided. The DC-9 magazine is a double-stack design, holding either 20 or 30 rounds depending on the model. Rounds are loaded into the magazine one at a time by inserting a round into the magazine, then pushing down on the round until it catches under the lip of the magazine. Repeat this until the magazine is either full or the desired number of rounds have been loaded into it. One thing that is particularly convenient about these magazines is that the rounds can be pushed rapidly straight down into the magazine, rather than having to slide each round backwards carefully under the magazine lips as on so many other pistols. With careful fingers, it is possible to push the cartridges in five or six at a time by hand, or load the entire magazine in a couple of whacks with stripper clips (don’t try that with your Glock [grin]). After the magazine is loaded, it is then inserted into the magazine well on the underside of the gun, just forward of the trigger. When inserting the magazine, it should be pressed upward into the receiver firmly until the magazine catch ‘clicks’, then pulled down briefly by hand to ensure that the magazine is actually locked in place. The DC-9 is a single-action pistol. Cocking the DC-9 is accomplished by pulling back firmly on, and then releasing, the cocking lever, which is topped by a small knob located on the left hand side of the upper receiver. The cocking lever must be pulled all the way back in its channel to properly chamber the first round. Once the first round has been chambered, the DC-9 will fire one round with each pull of the trigger (unless the safety is engaged). After the gun is cocked, the safety can be engaged by pressing the cocking lever in against the receiver (i.e. push it into the surface of the gun, not forward or backward). With the safety engaged, the firing pin and bolt are locked in place, allowing the trigger and sear to move freely without discharging the gun. Note that the safety can only be engaged while the gun is cocked. If the gun is not cocked, the cocking lever will not push inward to the “safe” position. The safety requires a deliberate pull to disengage; it can’t be quickly tapped off.

To unload the gun, press the magazine catch and remove the magazine from the magazine well on the under side of the gun. Disengage the safety (if it is engaged) to unlock the bolt, then slide the cocking lever fully rearward to ensure that any chambered cartridge is ejected. While holding the cocking lever back, look into the ejection port to make sure no cartridge is still in the chamber. IMPORTANT: Keep your finger away from the trigger while unloading this or any other firearm.

MISCELLANEOUS Q & A

Q: What is the recoil like on the DC-9?
A: The recoil seems a little strong compared to some other 9mm handguns. In most pistols, a fairly large portion of the gun’s total weight (i.e. the slide) is involved in recoil absorption. With the DC-9’s blowback action, however, only a small portion of the gun’s total weight (i.e. the bolt) moves to absorb recoil. The DC-9’s felt recoil could be characterized as similar to the felt recoil of a Colt 1911 (a .45 short-recoil action with heavy slide).

Q: The DC-9 seems really LOUD when I shoot it. Why is that?
A: A conventional short-recoil pistol directs virtually all of the noise straight out the barrel away from the shooter. The DC-9, however, is blowback operated and has large empty spaces inside the receiver, allowing a fair amount of the blowback gasses to escape from the correspondingly huge ejection port where the shooter will certainly hear it. This also has the side effect of tossing the empty cases out of the ejection port at a higher than typical velocity.

Q: The factory sights truly suck, so how the heck do I mount a scope on this thing?
A: Although this is not mentioned in the manufacturer’s documentation, the rear sight base just happens to be the right width for mounting ordinary .22 tip-off type scope mounts. Make sure you get a sturdy set of mounts, however, as the 9mm recoil is somewhat more than these tip-off mounts are usually built to take. The Wideview model WMS22 mount set seems to work well. Use these mounts to hold your favorite long eye relief scope. DO NOT mount a scope that is designed for a .22 rifle, as the eye relief is too short to be safe, and the insides of the scope will most likely not survive the recoil.

Q: Are there any larger capacity magazines for the DC-9?
A: Huh? 30 rounds ain’t enough for ya? Actually, there are occassionally seen 50 round aftermarket magazines for the DC-9 at gun shows, but I have not tried them. The 50 round mags are almost as tall as the gun is long, and they look pretty unwieldy when plugged into the pistol.

Q: I hear that DC-9’s are prone to jamming. Is this true?
A: Using the types of ammo recommended in the owner’s manual, I’ve never jammed a DC-9. Don’t use regular hollowpoints in the DC-9; they will not feed. There are a few exceptions, these being the more conical jacketed hollowpoints that are designed to somewhat resemble ball ammo (for example, Winchester Silvertips).

Q: I hear that DC-9’s are very inaccurate. Is this true?
A: Once familiar with the DC-9, most patient shooters will have no trouble knocking the center out of a paper target at normal defensive ranges. However, it is no match pistol. There are several factors at work here:

1. The factory sights are usually grossly misaligned, and they are not removable or adjustable. Attach a scope or some other form of sight, and things will improve dramatically.

2. The DC-9 is not designed and constructed to the same tolerances as the more expensive guns to which it is inevitably compared. It will never be quite as accurate as the next shooter’s Glock or SIG. In that sense it is ‘inaccurate’, but it is still capable of turning in perfectly respectable performances.

3. The shape and weight balance of the gun is very different from that of more conventional handguns, so many shooters must become accustomed to the ‘odd’ feel before their shooting improves with the DC-9.

From: http://www.recguns.com/Sources/IIIC2j1.html

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Type Single Action: semiautomatic
Caliber(s): .357AMP .44AMP
Weight unloaded: ~ 1630 g (with 165mm barrel)
Length: n/a
Barrel length: 165 or 216 mm (6 1/2 or 8 1/2 inch)
Magazine capacity: 7 rounds

The .44 Automag was originally created in the late 60’s by the Pasadena Corporation. After the Pasadena days, several companies had their own version of the firearm, including: TDE North Hollywood, TDE El Monte, High Standard, TDE / OMC, and AMT.

Contrary to popular belief, the automag used in Sudden Impact was neither a Pasadena model, nor an AMT. It was actually one of two guns that were hand-crafted especially for use in the film. Only one of the two actually fired, and was used for all of the shooting scenes.

THE ORIGIN OF HARRY’S AUTOMAG

In the novel, the film’s screenwriter reveals Harry’s introduction to the Automag:

Harry had received it as a gift. The grateful husband of a hostage and potential murder victim was a master gunsmith. A few months after Harry had rescued his wife from the mess of a botched bank robbery, he had sent him the boxed gun and a card that read, “You saved my wife’s life. Maybe this will help to save yours.”.

In his time as a cop, Harry had never accepted a thing, not even a free cup of coffee. But he accepted this gift.

AMMUNITION

The .44 Auto Mag cartridge was introduced in the ill-fated Auto Mag pistol in 1971. Its rimless, straight wall case was formed by reducing the length of the .308 Winchester case (or any other member of the .30-06 family) to 1.30 inches. The .44 Auto Mag was designed to shoot .429 inch bullets at about the same velocity as the .44 Magnum. No U.S. manufacturer has offered a factory loading for this cartridge, but cases were once available from a Mexican firm of Cartuchos Deportivos Mexico.

The gas operated Auto Mag featured a rotary bolt with locking lugs located at the front , much the same design as the later Wildey and Desert Eagle autoloader. Like those two, it was an extremely massive and heavy firearm designed to give handgun hunters .44 Magnum power from an autoloader. The cartridge was an excellent move in the right direction in the 70’s, but the gun was short lived due to a variety of reasons.

Like its ballistic twin the .44 Magnum, the .44 Auto Mag is powerful enough to be used on game such as deer and black bear at woods ranges. Whether or not one should go to the trouble of doing so today is questionable. Forming the case requires a set of custom dies from RCBS, an inside neck reamer, and plenty of spare time. If not for the availability of dependable autoloaders in .44 Magnum and .45 Winchester Magnum, the .44 Auto Mag concept would probably still be a good idea.

by Paco Kelly
photography by Paco Kelly
Updated August 9, 2006

It wasn’t very long ago that some very well-designed little .22 Magnum handguns were available from AMT (Arcadia Machine & Tool) of Irwindale, CA.

The two auto handguns pictured in the accompanying photos, the 4″ barreled version and the 6″ barreled version, were purchased years ago. These guns, along with a 2″ barreled version, were still listed in the 2000 Guns & Ammo Annual, but they had unfortunately disappeared by the time the 2001 G&A Annual was published. You won’t find too many auto-loading .22 Magnum handguns on the market because of the difficulty in the blowback systems typically seen in auto-loading rimfires. The extra pressure of the .22 Magnum requires a very heavy and bulky slide as an inertial damper, but AMT wanted to keep their guns slim, trim, attractive and appealing. SO to overcome the problem of blowback before the bullet leaves the barrel, AMT showed a little bit of design genius…The AutoMag II’s chamber has a series of small indents in its chamber walls. Upon firing, the cartridge case expands into the indents as well as against the chamber wall, thus gripping the wall of the chamber. By the time the chamber wall has been released by the brass’ “memory” springing back to its normal state, the bullet has left the barrel, pressure has dropped to a safe level, and the ejection cycle continues as normal. AMT always explained in their user manuals, “USE ONLY .22 WINCHESTER MAGNUM RIMFIRE AMMO”.

When the AutoMag II first hit the market, CCI .22WMR ammo wouldn’t completely activate the slide in the ejection cycle. This would cause jams. Winchester brand ammo did not exhibit this problem, which probably resulted from differences in the brass recipe used in the cartridge cases. These problems were rectified in a very few years, and CCI ammo, as well as Winchester and several other makes, now cycles just fine in my two guns.

The 4″ barrel model is actually a bit more than that if measured from the breech face with an empty chamber. Dropping a measuring rod down the barrel (after double-checking that the gun was not loaded!) yielded a measurement of 4.57″, which would drop to a bit less than 4″ from the nose of the bullet once the gun is loaded.

But in truth, we should measure to the mouth of a fired cartridge case, because the pressure begins at the base of the bullet, not the nose. With revolvers, the “real” barrel length, as far as pressure is concerned, is from the mouth of the cartridge in the cylinder’s chamber all the way to the muzzle of the barrel.

So, measured in this way, the AMT’s barrel is actually very close to its advertised 4″ length. Plus it is a “closed chamber”, unlike a revolver which has a barrel/cylinder gap that drops 50-60 feet per second of muzzle velocity for each 1/1000th of an inch in the gap. For comparison, centerfire cartridges such as the 9mm, .40 S&W, and 10mm Auto lose nearly 100 feet per second for every 1/1000th of gap.

The AMT AutoMag II’s slide is 0.791″ wide, or just a little over 3/4″ of an inch. The grips are just slightly over 1″ wide. The average .45 ACP autoloader’s slide is an inch wide, and the grip almost an inch and a half. Overall, the 4″ AutoMag II is 7″ long and 4.8″ high.

Small, slim and light to carry, with a nasty bite. Except for grips and springs, the AutoMag II is made entirely from stainless steel. Even the magazine, which holds nine rounds (allowing a total capacity of ten rounds including one in the chamber) is made from stainless steel. The AutoMag II features an excellent hammer block safety, almost Ellison-like adjustable rear sight, and an outstanding ramp front sight.

With most magnum handgun cartridges, there is about a 300-400 fps velocity drop as compared to the same round fired from a rifle, and the .22 Magnum is no exception. Winchester’s 40-grain Hollowpoint gives 1903 from my 24-inch CZ rifle; the same ammo from my six-inch AMT clocks 1442 fps, and the four-inch AMT gives 1333 fps.

Rimfire magnum ammo is somewhat strange: it’s all over the place in bullet weight, velocities and bullet strength. As an example, for years Winchester used a slow-burning powder in the .22 WMR because the thinking at the big red “W” was, “It’s a rifle cartridge”. Likewise, CCI used faster-burning powder because they thought of the .22 WMR as a handgun cartridge.

It was Ruger that finally debunked the idea that the .22 WMR was a “rifle-only” cartridge with their wonderful Single-Six with dual .22 LR and .22 WMR cylinders. Up until that time it was only CCI and Winchester with hollowpoint and solid-bullet offerings, but the round I once referred to in an article as “the sleeper” has awakened in the minds of the shooting public and the ammo companies.

As shown in the accompanying picture, there are seven different selections from six different manufacturers, and that’s only a small sample of what’s available. Some .22 WMR ammo, like CCI’s TNT Maxi-Mag, features an extremely explosive bullet design and is tailored more for vermin and pests than for small game. On the other end of the spectrum, some feature extremely tough bullet designs, such as CCI’s Golden Hollow Point load, which is loaded with Gold Dot bullets; I have not cut one of these open yet, but I suspect they are solid soft copper with a punched hollow point. Loads such as these are excellent for small game up to javelina and coyotes. Of course, coyotes get hit with everything, whether it’s frangible or not!

Remington’s Premier ammo has a rounded pointy bullet with a small soft point. Predators have a soft point and a flat tip; this is a jacketed bullet, not a copper-washed bullet, with a large soft flat nose. And of course, all the ammo companies make solids as well as hollowpoint designs. Federal even has an all-lead 50-grain low-velocity load (about 1450 fps from a rifle) for squirrels and such. And much, much more.

I carried RWS (Dynamit-Nobel) European .22 WMR ammo for self-defense when I carried the little AutoMag II off-duty or in the woods and such. It left the barrel of my six-inch gun at an amazing (for then) 1550 fps and 213 pounds of muzzle punch. One day an idiot pulled a knife on me when I informed him that he was under arrest; I put the AMT to his kneecap and pulled the trigger. He fell down and cried for momma, poor baby. The State gave him free room and board for fifteen years, and he gave up dancing forever. But RWS ammo is expensive, so I now go with the CCI Gold Dot. It does just as well, if not better, with its 1525 fps from the 6″ AMT.

But to put it in perspective, the .22 WMR from a rifle is much closer to the .22 Hornet than it is between the Hornet and the standard .22 LR high-velocity round. So from a handgun with a four-inch or longer barrel, the .22 WMR will give the same or more velocity than a high-velocity .22 LR will give from a rifle!

The .17s may be all the rage today, but it’s the .22 Magnums and their heavier bullets that will bring home the bacon.

Paco Kelly

 
The .22 Magnum, or .22 WMR (Winchester Magnum Rimfire) has a wide variety of quality factory ammunition available, including the small sample shown here. The .22 Magnum is still a very effective round for a variety of uses, from target shooting to vermin shooting to small-game hunting and even self-defense, and the AMT AutoMag II was one of the finest .22 Magnum handguns ever produced.

AMT’s AutoMag II .22 Magnum pistol.

From: http://www.gunblast.com/Paco_22AutoMag.htm

AMT AutoMag

Weight: 3.7 lbs (1.66 kg)
Caliber: .44 AMP
Barrel: 6.5 inch (16.3 cm)
Action: Single action
Range: 165 ft (50 m)
Payload: 7 + 1

AutoMag II

Weight: 32 oz
Caliber: .22 WMR
Barrel: 6,4 1/2,3 3/8
Action: Single action
Range: 165 ft (50 m)
Payload: 9 (7 in 3 3/8″ barrel)

AMT AutoMag III

Weight: 2.2 lbs (1 kg)
Caliber: .30 Carbine
Barrel: 6.5 inch (16.3 cm)
Action: Single action
Range: 165 ft (50 m)
Payload: 8 + 1

AMT AutoMag IV

Weight: 2.9 lbs (1.3 kg)
Caliber: .45 Winchester
Barrel: 6.5 inch (16.3 cm)
Action: Single action
Range: 165 ft (50 m)
Payload: 7 + 1

AMT AutoMag V

Weight: 3.2 lbs (1.42 kg)
Caliber: .50 AE
Barrel: 6.5 inch (16.3 cm)
Action: Single action
Range: 165 ft (50 m)
Payload: 5 + 1

AMT Backup

Weight: 1.12 lbs (0.51 kg)
Caliber: .380 ACP & .22lr
Barrel: 2 inch (5 cm)
Action: Double Action Only
Range: 75 ft (22.9 m)
Payload: 5 + 1

AMT HardBaller

Weight: 1076 g
Caliber: .45 ACP
Barrel: 127mm
Action: Single action
Payload: 7 + 1

AMT Javelina

Weight: 1.3kg
Caliber: 10mm
Barrel: 165mm
Action: Single action
Payload: 8 + 1

From: http://www.glossover.co.uk/amt/

Designed with the flexibility and performance features needed for competition or plinking, the SP22 offers various expansion options through a four-model family. Each SP22 model is chambered in .22 LR and offers a variety of accessories for all levels of sport shooting. The SP22 pistol is manufactured with a high-strength aluminum housing with all-steel internal components. The pistol is offered in four unique models - the SP22 M1, SP22 M2, SP22 M3 and SP22 M4. Smith & Wesson has begun shipments of the SP22 M1 and M2 models with the remainder of the SP22 line expected to be available in Spring 2008.

Providing the ultimate in flexibility, the SP22 will be available with a variety of optional accessories to match each pistol. Allowing users to tailor the pistol to all shooting sports disciplines, the SP22 can easily cater to every user group from beginning youth to expert competition shooters. Accessories for the SP22 include: an interchangeable 6-inch barrel system, Picatinny-style rails for the 4 and 6-inch models, junior polymer grips, adjustable wooden match grips, TRUGLO® sport sights, laser sights and a variety of optics. In addition, the M2, M3 and M4 models can accommodate an under barrel weight which can be individually removed and positioned to suit user preference resulting in customized balance.

SP22 M1

The basic version of the new pistol is the SP22 M1. The M1 is equipped with a 4-inch standard barrel along with a two-stage trigger complete with adjustable trigger stop. The base model is manufactured with an adjustable steel rear sight and a three-width adjustable front sight. Medium sized polymer grips are standard on the M1 model with smaller grip sizes for juniors also available.

Model-: SP22 - M1
Caliber-: .22LR
Length: 7.68″/195mm
Height: 5.11″/130mm
Overall Width: 1.5″/38mm
Barrel Length: 4″/100mm
Sight Radius: 7.08″/180mm
Weight (with Mag): 27oz/765g
Standard Mag: 10 Rounds
Action: Single Action
Trigger Type: Target
Grip: Polymer, Standard Size
Housing: Aluminum
QuickRelease Mag Catch: Optional

SP22 M2

For shooters wanting a longer barrel, the pistol is also available in a second model - the SP22 M2. Designed with the same standard features that are found in the M1 model, the M2 pistol is standard with a 6-inch barrel for increased velocity and accuracy.

Model-: SP22 - M2
Caliber-: .22LR
Length: 9.65″/245mm
Height: 5.11″/130mm
Overall Width: 1.5″/38mm
Barrel Length: 6″/150mm
Sight Radius: 8.66″/220mm
Weight (with Mag): 27oz/785g
Standard Magazine: 10 Rounds
Action: Single Action
Trigger Type: Target
Grip: Polymer, Standard Size
Housing: Aluminum
QuickRelease Mag Catch: Optional

SP22 M3

For competition shooters, the Walther pistol is offered as the SP22 M3. The M3 model features a 6-inch match grade barrel along with an adjustable match trigger with trigger stop. The M3 pistol comes standard with removable Picatinny-style rails on the top of the slide and underneath the barrel for quickly and easily adding optional accessories. For quick loading and unloading during competition, the M3 is standard with an extended magazine release. The M3 pistol is equipped with medium sized polymer grips along with an adjustable rear sight and a three-width adjustable front sight.

Model-: SP22 - M3
Caliber-: .22LR
Length: 9.65″/245mm
Height: 5.11″/130mm
Overall Width: 1.5″/38mm
Barrel Length: 6″/150mm
Sight Radius: 8.66″/220mm
Weight (with Mag): 27oz/785g
Standard Magazine: 10 Rounds
Action: Single Action
Trigger Type: Match
Grip: Polymer, Standard Size
Housing: Aluminum
QuickRelease Mag Catch: Standard

SP22 M4

Also available to competition shooters is the SP22 M4. The M4 model retains the same standard features that are found on the M3 model but includes a medium sized adjustable wooden grip with hand support. Optional Picatinny-style rails can be added to the M4.

Model-: SP22 - M4
Caliber-: .22LR
Length: 10.24″/260mm
Height: 6.1″/155mm
Overall Width: 1.97″/50mm
Barrel Length: 6″/150mm
Sight Radius: 8.66″/220mm
Weight (with Mag): 32.5oz/920g
Standard Magazine: 10 Rounds
Action: Single Action
Trigger Type: Match
Grip: Shaped Wooden Grip
Housing: Aluminum
QuickRelease Mag Catch: Standard

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