Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low View: 21 42 All Add to cartGas System PartsA.R.M.S. Gas Block with Flip-Up Front Sight, Bayonet Lug AR-15, LR-308 Standard Barrel .750″ Inside Diameter Steel Matte | AMMO $179.99 Tax Rated 4.00 out of 5