Package Includes: - 1 x King Comp - 1 x Crush Washer Features: - Dual chamber design to reduce felt recoil - Specifically angled gas ports to cancel side concussion. - Serrated prongs for barbed wire removal - Heavy duty steel construction with parkerized finish Product Spec: - Length: 2.62” - OD: 0.87” - Weight: 3.8 oz - Materials: Steel - Color: Black - Caliber: .223/5.56 Thread Pitch: 1/2x28 - Caliber: .308/7.62 Thread Pitch: 5/8x24