Beretta Web - Beretta SMG Model PM12S2

Beretta Model PM12S2

Telescopic Bolt.
The telescopic bolt, which encloses the barrel (200 mm Long) for three quarters of its length, makes the firearm very compact and reduces to a minimum the upward movement of the muzzle during firing. The front grip, the magazine housing, the trigger guard with firing device and manual and automatic safety devices are all in a one piece assembly and are integral part of the receiver. This gives solidity to the firearm and ensures good performance over the years. Longitudinal grooves along the whole length of the receiver allow excellent sliding of the bolt even in the extremely adverse conditions (fall of the gun in mud and exposure to dust and sand).

The PM12 S2's sturdiness and its total reliability in different latitudes can easily be seen in the general structure of the gun and in the dimensions of its component parts, as also in the extreme simplicity of design and assembly. The Beretta PM 12 S2 is a NATO qualified sub machine gun for ammunition interchange ability test.

Manual and Automatic Safety, Cocking Handle Safety.
The selector device allows for an easy selection of three positions, namely: "manual safety" (S), "single shot” (1), "full automatic fire" (R), without any need for removing the hand from the grip. The automatic safety, which locks the trigger and the bolt in its closed position, safeguards from accidental firing if the gun is dropped and precludes firing if the grip is not firmly held.
The safety on the cocking handle blocks the bolt in case this is not fully retracted, thus preventing an accidental discharge.
The fixed firing pin can strike the primer only when the cartridge is fully chambered, avoiding accidental firing, since the gun fires from the "open bolt' position.