The GEMTECH Lunar-45 is the culmination of decades of silencer innovation. We have created the lightest and quietest modular 45 caliber suppressor available that is able to be completely taken apart and cleaned. The Lunar-45 is crafted from military grade aluminum and titanium for the utmost in durability and strength. GEMTECH offers a variety of mounting options for the Lunar-45 allowing it to be used on a variety of platforms and calibers. The Innovation Accuracy and Quality is what makes GEMTECH The Professional's Choice for Decades - Caliber: 45ACP - Sound Reduction: 28dB Long 21dB Short - Diameter: 1.375 - Length: 8.5 Long 6.9 Short - Weight In Units: 11.3oz Long 10.1oz Short - Mount: All GM-45 suppressors are shipped with a .578-28 standard piston - Material: Aluminum - Full Auto Rated: Yes - Finish: Matte Black Cerakote with Reduced Visual-IR Signature