Automatic adjustable buttstock for small arms

摘要

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.

主权项

1. An automatic adjustable buttstock system for a small arms weapon, comprising:
a buttstock; 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 having a locking lever and having a pair of locking tabs adapted to engage the female locking slots disposed along the length of each rail; a spring disposed between a rear wall of the lock block and a cavity in the buttstock, the spring being adapted to rearwardly bias the buttstock towards a fully extended position, wherein the locking lever is adapted to be moved 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 spring is fully compressed, to the fully extended position of the buttstock as urged rearwardly by the spring, and wherein the locking lever is adapted to be moved back causing the locking tabs to engage the female locking slots at a desired position along the parallel rails to lock the buttstock.