Includes Charlie ASR Mount and Charlie .30 cal front cap. Compatible with the Charlie ASR Mount all Charlie Direct Thread Mounts Charlie Piston Mount all Charlie Front Caps all ASR Muzzle Devices Pistons and Tri-Lug – Short Configuration: weighs 12.2 oz. & Measures 5.78 inches (without mount) – Long Configuration: weighs 14.9 oz. & Measures 7.72 inches (without mount) – Rated for all centerfire pistol and rifle calibers including 45 Auto 10MM 450 Bushmaster 458 SOCOM 45-70 338 LM and up to 460 Weatherby Magnum. – Constructed of Titanium Inconel and 17-4 Heat Treated Stainless Steel – Full-Auto Rated – Caliber: 9MM to 45 ACP / 5.56 NATO to 45-70 GOV & up to 338 LM – Accessories: Charlie ASR Pistons & 3-Lug – Weight: 12.2-19.9 oz – Length: 5.78 – 9.0 – Diameter: 1.57 – Materials: 17-4 SS Titanium & Inconel