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 features a supported anti-rotation buffer retaining plunger and a convenient sling swivel is machined into the back to facilitate "push-pull" operation.This slick version features an all-around smooth profile.Rails: Black AnodizedType: Buffer TubeFirearm Type: Receiver Extension TubeFinish: Aluminum