Beretta USA Corp.

Francesco Franzini

Andrea Gomirato

A gas operating system for engaging the automatic or semi-automatic action of small arms. The system has a short, displaceable cylinder with a gas block ring secured thereto, a short, fixed piston attached coaxially to a gun barrel, and a single locking nut, advantageously in the form of a threaded flash suppressor. The piston includes gas block rings at its rearward exterior surfaces. The cylinder has a short stroke between radial forward and rear stops fixed on the barrel, which short stroke may be finely adjusted by threaded axial displacement of the rear stop. Pressurized combustion gas from fired ammunition fills a gas chamber formed by the interiors of the piston and cylinder, the gas entering through radial ports in the barrel. The system may be machined and assembled/disassembled with ease and may be readily adapted for employment in any small arms. The system may be fine tuned for usage with a wide spectrum of ammunition.

Gas operating system for small arms with spring loaded gas valve

An automatic adjustable buttstock system for a small arms weapon including a buttstock and a pair of parallel rails adapted to slidably mount the buttstock on a body of the weapon, each rail having a plurality of female locking slots along its length. A lock block is employed having a pivotable spring-loaded locking lever and a pair of locking tabs adapted to engage the female locking slots disposed along the length of each rail. A volute spring disposed between a rear wall of the lock block and a cavity in the buttstock is adapted to rearwardly bias the buttstock towards a fully extended position. The locking lever is adapted to be pivoted to disengage the pair of locking tabs from the female locking slots for displacement of the buttstock between a fully shortened configuration, in which the volute spring is fully compressed, to the fully extended position as urged rearwardly by the volute spring. The locking lever is adapted to be released causing the locking tabs to engage the female locking slots at a desired position along the parallel rails to lock the buttstock.

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Accokeek, MD, United States of America

Francesco Franzini