CALIBER 7.62mm (30 Caliber) - WEIGHT 12.5 oz - DIAMETER 1.75 in - OVERALL LENGTH 7 in - ATTACHMENT / MOUNT Quickie Fast-Attach - MATERIAL(S) Stainless Steel - FINISH Melonite - QUICKIE MOUNT FAST-ATTACH. CLASSIC. - UPDATED BAFFLE DESIGN. PREMIUM SOUND PERFORMANCE. - OPTIMAL FOR SUPER-SONIC AND SUB-SONIC. - COMPACT LIGHTWEIGHT; DESIGNED FOR NINJAS. - SOUND TO SIZE PERFORMANCE: WITCHCRAFT. - WEIGHS THE SAME AS AN AVERAGE ADULT DESERT HEDGEHOG.