These Spanish made CETME rifles were based on the design developed by the German engineer Ludwig Vorgrimler in 1945 who also used this design to develop the experimental German StG 45(M). The Model C rifles use the same type of delayed rolled-block, blowback type mechanism that eventually evolved into an extremely successful and very famous G3/HK91/93 series of rifles. Shows the standard large MARS Equipment Corp. import mark on the right side of the receiver and "CETME 'Sport'" on the left. With ventilated steel forearm and folding stock, scope mounting blocks on top of the receiver, folding bipod, and contoured pistol grip.