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A choke is a tapered constriction of a firearm barrel at its muzzle end. Chokes are most commonly seen on shotguns, but are also used on some rifles, pistols, or even airguns. [1] Notably, some .22 LR match rifles have a constricted bore diameter near the muzzle. [citation needed]
The .22 long rifle, also known as the .22 LR or 5.7×15mmR, [4] [5] is a long-established variety of .22 caliber rimfire ammunition originating from the United States. It is used in a wide range of firearms including rifles , pistols , revolvers , and submachine guns .
Originally, it slightly outperformed the .22 LR, but was "not noted for great accuracy", [2] while later smokeless loads achieved about the same muzzle velocity as the .22 LR. [citation needed] As with the .22 Winchester Automatic [3] and .22 Remington Automatic, [4] the .22 extra long will not chamber correctly in .22 long rifle weapons. [2]
H&R model 939 Ultra Sidekick (.22 LR double-action revolver) Introduced in 1956. [17] H&R model 944 22 Special (.22 LR seven-shot or nine-shot revolver adjustable rear sight, fixed yellow brass front sight) H&R model 949 (.22 LR nine-shot revolver) H&R model 950 (.22 LR nine-shot revolver, nickel) H&R model 999 (.22 LR nine-shot top break revolver)
The slide of the P220 series is a heavy-gauge sheet metal stamping with a welded-on nose section incorporating an internal barrel bushing. The breech block portion is a machined insert attached to the slide by means of a roll pin visible from either side. The frame is of forged alloy with a hard-anodized coating.
The Intratec TEC-22 is a semi-automatic handgun chambered in .22 Long Rifle. [1] It was also marketed as the Scorpion and Sport-22. The TEC-22 operates using a straight blow-back action.
A silencer is typically a hollow metal tube made from steel, aluminum, or titanium and contains expansion chambers. It is usually cylindrical in shape, and attaches to the muzzle of a pistol, submachine gun, or rifle. Some can-type silencers, named for their resemblance to beverage cans, are detachable, and can be attached to a different firearm.
Light match triggers are common, and modifications such as slide rackers, thumb rests ("gas pedals") and grip tape on the slide can sometimes also be seen. The IPSC box has internal dimensions of 225 x 150 x 45 mm [ 9 ] in length × height × depth with a tolerance of +1 mm, −0 mm (approximately 8.86 × 5.91 × 1.77 inches).