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The chrome-lined, four-groove, 9.27mm caliber barrel is pressed and pinned to the frame through a precision-machined ring. The 7 kg recoil spring wraps around and is guided by the barrel. The spring-loaded trigger guard is pivoted down and swung to either side on the frame, allowing removal of the slide.
The return spring and guide rod are identical to those of the AK. The Bizon has a four-groove barrel with a 240 mm (1:9 in) right-hand rifling pitch. [ 1 ] The gun's muzzle device has a large rectangular port on each side of dead center that serves to reduce muzzle jump, although the main purpose of this device is to protect the muzzle and ...
A large redesign effort was made by Stechkin. He took several innovations from the Makarov pistol, such as the general silhouette, slide rails, extractor. The gun was lightened, the trigger mechanism redesigned and simplified, and the trigger guard reshaped. After successful military tests, the APS was formally adopted on December 3, 1951.
Makarov pistol: 9×18mm Makarov: 1951–present still widely used by police, military and security forces IZh-70, IZh-71, MP-71 commercial variants: 9×18mm Makarov, .380 ACP; PB (pistol) (9×18mm Makarov) silent pistol with integral suppressor; PMM (9×18mm Makarov) modernized version; OTs-35 (9×18mm Makarov) attaching compensator (upgrade ...
The OTs-33 Pernach (ОЦ-33 Пернач, Russian for "pernach") is a Russian 9x18 Makarov machine pistol, derived from the 5.45 mm OTs-23 Drotik machine pistol. The Pernach is an automatic pistol designed to replace the Stechkin APS in various special OMON units within the Russian police, the Russian Ministry of Internal Affairs (MVD) and other paramilitary units.
After the trigger mechanism has been released, the tensioned mainspring will drive the firing pin or hit the firing pin so that it is driven. Mainsprings can come in many shapes, such as a cylindrical spring (Mosin-Nagant, TT-33, Colt M1911), plate spring (Nagant revolver model 1895, Makarov pistol) or spiral spring (Kalashnikov).
By the late 1950s FÉG began making broader changes resulting in the PA-63, which uses the 9×18mm Makarov round. It quickly became standard issue to both Hungarian military and police forces. The military standard PA-63 version sports a two-tone polished aluminum frame with black slide, grips, trigger and hammer assembly. [ 1 ]
9×18mm Makarov.380 ACP Russia: 1994 OTs-27 Berdysh: KBP Instrument Design Bureau: 9×18mm Makarov 9×19mm Parabellum 7.62×25mm Tokarev Russia: 1994 OTs-33 Pernach: KBP Instrument Design Bureau: 9×18mm Makarov Russia: 1995 Oznobischev 1925.32 ACP Soviet Union: 1925 P9RC: Fegyver- és Gépgyár: 9×19mm Parabellum Hungary: 1980 P-83 Wanad: FB ...