The Stealth Project Flash Brake is a dual purpose muzzle device to reduce flash signature as well as reduce felt recoil. Designed to be used in conjunction with the Stealth Project RECON QD Suppressor the front taper on the device self aligns with the suppressor to give you perfect alignment and perfect repeatability every time the suppressor is unattached and reattached. 1-18 thread gives you quick attachment. Stealth Project muzzle devices gives you the longest attachment plane for your suppressor giving them the most rigid lockup. The Flash Brake can be pinned and welded to make your 14 barrel legal length to avoid SBR paperwork. - SPECIFICATIONS - Manufactured: USA - Caliber: 7.62MM/.308 cal - Weight: 2 oz - Overall Length: 1.875 - Diameter: 1 - Thread Pitch: 5/8-24 - Attachment Style: Taper Mount - Material: 4140HT Steel - Finish: Black Nitride