Revolutionary SIG SAUER system enables quick and simple attachment of suppressor to firearm. Taper-Lok Fast-Attach System with Muzzle Brake optimizes alignment improves accuracy reduces point of impact shift and doesn't require any shims. Taper-Lok mount is also extremely simple to install transforming an hour project into a 5-minute job. - Available in multiple thread pitches and calibers this muzzle brake self-centers the firearm and suppressor which reduces group dispersion. It's also available in a sub-caliber mount to enable true multi-caliber versatility such as using the SRD762 suppressor on a 5.56-caliber firearm. It has a low profile yet is effective at reducing recoil and works best on SIG Taper-Lok-shouldered barrels but is also backwards compatible with traditional 90-degree shouldered barrels.