Surgeon Rifle bottom metals are a replacement for most Remington and all M-5 bottom metals. They feature a low profile ambidextrous magazine release and a beveled mag well for simplified magazine change. Weight: 6 oz. Includes: (2) ¼-28 cap screws, (2) aluminum bedding pillars for perfect fit and function, and (1) five round AI magazine (.308) Surgeon AI AICS SA Mag Bottom Metal w/Pillars & Bolts (NO MAG) SA-DBM