Patent ID: 8186090

Claim:
An adjustable buttstock assembly for a hand carried weapon, comprising: a backplate and latch assembly which latches to the receiver of the weapon; a cylindrical inner stock having a first and second end, which first end is fixed to the backplate and latch assembly; a cylindrical hydraulic buffer having a first end that rests against the back of the weapon, which cylindrical buffer is secured to and passes through the backplate and latch assembly and extends within the inner stock, such that the second end thereof extends generally to the mid-point of the length of the inner stock; a cylindrical outer stock having a first and second end, which first end of said outer stock slidably accepts therein the second end of the inner stock, and which second end of said outer stock is secured to a buttplate; a lower engagement pin and an upper engagement pin mounted on the opposed ends of a compression spring located within a sleeve held transversely within the inner stock, near the second end thereof; the outer stock having a plurality of discrete holes located along the lower side thereof; the outer stock having a plurality of partial oval openings located along the upper side thereof, which upper partial oval openings are opposed to the discrete holes located along the lower side thereof; the plurality of upper partial oval openings being separated by generally flattened teeth, to form a rack, where the partial oval openings open into a channel that runs the length of the rack; wherein, when the inner stock is slidably located within the outer stock, the compression spring will force the lower and upper engagement pins, into the set of opposed lower holes and upper openings, respectively, within the outer stock when the openings and holes are aligned therewith, thereby locking the inner and outer stocks into a particular relative position, one to the other; and whereby, when the lower engagement pin is compressed, compressing the compression spring, such that the lower engagement pin is within the outer stock, and thereby the outer stock is thus free to rotate, and is rotated in relation to the inner stock such that the upper engagement pin moves out of the particular partial oval opening in which it may be, into the channel, whereby by the inner stock can be moved longitudinally unimpeded relative to the outer stock to any discrete position having the opposed lower hole and upper partial oval opening, such that the stocks can be rotated back, in the opposite direction, to reengage the lower and upper engagement pins into a new set of opposed lower hole and upper partial oval opening, to thereby change the relative extension of the inner and outer stocks.