Quick view Strike Industries Strike Ar Carbine Pistol, Si Ar-carpre-slick-blu Ar Carb Pst Rec Buffer Tube $52.84 $49.95 Strike industries' carbine length pistol receiver extension is designed to be a serious piece of hardware.Machined from 7075-t6 aluminum construction, the carpre offers much greater strength than your standard 6061 tubes.The pistol receiver extension... Compare Add to Cart