It features our taper mount shoulder to align with our barrels and silencers, uses a 1/2 inch socket on the front for easy install and removal, and features 360° circumferential ports to alleviate the need for timing and shims. Backwards compatible with standard 90 degree shouldered barrels.   SPECS WEIGHT:  2.0 oz. OVERALL LENGTH: 1.64 inches MATERIAL: 17-4 Stainless Steel LENGTH ADDED TO BARREL: 0.8 inches THREADS: 5/8-24 (7.62mm BORE) DO NOT shoot 9mm through a 7.62 silencer! RECOMMENDED TOOLS We have seen a wide range of outside diameters for 1/2 inch sockets.  1/4 inch drive sockets are generally the best for Cherry Bombs, though we have 1/2 inch drive sockets that work as well. Here is a confirmed compatible socket. Paramount 1/2″, 3/8″ Drive See the last image for installation instructions NOTE: Rocksett not include. Rocksett can be purchased at the link below. Rocksett™ FREQUENTLY ASKED QUESTIONS (FAQ) Can I use the Cherry Bomb™ on my 90° shouldered barrel? Yes.  Here’s what we recommend for a minimum shoulder. DOWNLOAD Can this be pinned and welded to my 14.5″ barrel to make it 16″? The Cherry Bomb™ is too short and NOT recommended for pinning and welding to a barrel.