CALIBER 7.62mm (30 Caliber) – WEIGHT 16 oz – DIAMETER 1.75 in – OVERALL LENGTH 8.5 in – ATTACHMENT / MOUNT Quickie Fast-Attach – MATERIAL(S) Stainless Steel – FINISH Melonite – QUICKIE MOUNT FAST-ATTACH. CLASSIC. – UPDATED BAFFLE DESIGN. QUIETEST .30 CAL CAN IN THE WORLD. – ALL STEEL SO NO FLASH AND ADDED DURADILITY – PREMIUM VALUE. UNBEATABLE QUALITY. = QUIETEST SUBSONIC 300 BLK CAN YOU’VE EVER HEARD HANDS DOWN. – WEIGHS THE SAME AS A MEDIUM-SIZED GRAPEFRUIT.