Spikes Tactical T1 Heavy Tungsten Buffer - Looking for a heavy buffer to replace your standard carbine buffer? Well, we came up with something that offers the HIGHEST performance at a reasonable price. The ST-T1 buffer is one of the softest shooting, smoothest, and quietest buffers on the market; not to mention it looks awesome! It is 100% maintenance free! Material: Solid Aluminum Billet Finish: Black Anodized Features: Crushed Tungsten, Mil-Spec Bumper