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The upper and lower receivers of the FGC-9 are fully 3D-printed, as are its pistol grip and stock. Its magazine, based on the Glock magazine design, may also be printed. For the MkI, an AR-15 or modified airsoft trigger system is needed for the fire control. In the MkII release, the developers released a package to 3D-print the AR-15 trigger.
The addition of a proprietary hydraulic buffer system in the receiver back plate helps control recoil. [6] More than 50% of the APC's parts are interchangeable between the different platforms. [2] The APC's upper receiver is made from aerospace-grade alloy, and the lower receiver, pistol grips, magazine, and butt stock are made from polymer. [7]
The KG-9 and KG-99 have an open-end upper receiver tube where the bolt, recoil springs, and buffer plate are held in place by the plastic/polymer lower receiver frame. This design only allows for 115 grains (7.5 g) 9mm ammunition, and if a heavier grain ammunition or hot loads are used, the plastic lower receiver will fail or crack, rendering ...
A disassembled Mauser action showing a partially disassembled receiver and bolt. In firearms terminology and law, the firearm frame or receiver is the part of a firearm which integrates other components by providing housing for internal action components such as the hammer, bolt or breechblock, firing pin and extractor, and has threaded interfaces for externally attaching ("receiving ...
The modified receiver used in the SW99 is supplied by Walther and is manufactured in Germany. Smith & Wesson manufactures the slide and barrel of the SW99 in the United States. Though there are slight variations in aesthetic design, the function of the SW99 is identical to its German-made counterpart. [2]
Placed side by side, the KG-99 and MP-9 upper and lower receivers are identical with the exception that the MP-9 has a bolt hold open slot milled in the upper and the tip of the muzzle has a compensation slot cut into it. Interdynamic produced a very small quantity of registered MP-9 submachine guns due to lack of demand by the general public.
The lower receiver/frame is a one-piece machined design integral with the pistol grip and trigger guard.It houses all the firing components and the safety mechanism.The magazine is fed through the pistol grip. 16-, 20- and 30-round magazines were made for the weapon, but have been in production since 1993.
The Rohrbaugh R9 was a semi-automatic pistol produced by Rohrbaugh Firearms of Long Island, New York. It was chambered in 9×19mm Parabellum, and was designed to be a lightweight, compact self-defense weapon. The R9 was rated for standard pressure 9mm ammunition. Firing +P or +P+ ammunition in the R9 was not recommended by the manufacturer.