SPECS : - Diameter: 1.5 - Overall Length: 5.9 - Length Added: 4.5 when using included Minimalist Brake 3.5 when using longer devices - Weight: 14.4Ounces - Materials: High strength high temperature corrosion resistant 17-4PH Stainless Steel & 718 Inconel - Attachment: DUAL-LOK Mounts - DB Rating: (135.6db) 11.5 Griffin MK1 (134db) 16 Griffin MK1 - Finish: High Temp Cerakote - Full Auto Rated: Yes - FEATURES - Utility patents pending - Wear free mounting system requires no consumable parts - Taper lock interface ensures security and accuracy - ACME thread provides speed of attachment - Locking ring incorporates 3 anti-rotation teeth to eliminate inadvertent loosening - 120 effective positions ensure a rock-solid suppressor mount and provide extremely low POI shift - 17-4 stainless steel & 718 Inconel - Traditional Tube Design with internal flash hiding characteristics - Patent pending ECO-FLOW baffle system for reduced blow back - Patented flash reducing end cap - DUAL-LOK Minimalist Brake 1/2x28 5.56mm (.22 cal) Included - � wrench flats on muzzle devices - Collar Nitrided for increased surface hardness corrosion and wear resistance - Suppressor body H900 heat treated and Cerakoted - Perpetual Lifetime Warranty