Lantec Dragon Muzzle Brake Sig MPX ***$200 shipped*** NIB Also available Lantec MPX Break 9mm ***$200 shipped*** Manufactured to the highest quality standards and featuring a patent pending design, the LANTAC DGN762B™ Muzzle Brake offers improved recoil management and muzzle rise over competitors products. Its unique Short Energy Pulse system reduces length of recoil so that repeating shot energy cannot overlap and knock the shooter off target. Full auto fire is possible with massively reduced recoil and muzzle climb, meaning that all shots fall on target. SPECIFICATION: Caliber: 7.62X51mm / .308 Material: Hardened Milspec Steel Finish: Black Nitride QPQ Dimensions: L: 2.660'', DIA Body: 0.866'', DIA Fins: 0.900'' Weight: 2.8oz Thread: 5/8-24 UNEF R/H Serial Numbered for Quality Control Comes with appropriate crush washer.