The Omega™ 9K and Omega 45K are exceptionally versatile suppressors. The Omega Ks are the smallest lightest and quietest silencers in their respective classes. Full auto rated and usable with pistols rifles and submachine guns the Omega K series offers extreme durability in an ultra compact package and is compatible with 9mm as well as subsonic and supersonic .300 BLK. With the fully welded tubeless minimalist Omega K big sound suppression now comes in a tiny footprint. – Caliber: 9mm to .45 ACP Including .300 BLK – Muzzle Average: – 9mm: 137.7 dB – .40 S&W: 136.2 dB – .45 ACP: 135.9 dB – .300 BLK SUB: 133.5 dB – .300 BLK SUPER: 136.1 dB – Weight: 10.7 OZ – Length: 6.36” – Diameter: 1.48 – Materials: Stellite & Stainless Steel