WASR-ten rifle without a bump inventory fitted Bump stocks or bump fireplace stocks are gun stocks which might be made use of to aid in bump firing, the act of utilizing the recoil of the semi-automatic firearm to fireplace cartridges in fast succession. When, in 1861, Dr Richard Gatling patented https://machguns.com/product/heckler-koch-hk33k-5-56mm-machine-gun-pre86-dealer-sample/