The 556-SD™ is a fast attach silencer for 5.56mm hosts. With a design based on an earlier version of the best selling M4-2000™, the compact and lightweight 556-SD™ offers consumers feature-rich content and excellent value. The 556-SD™ uses the tried and true 51T Ratchet Mount™ fast-attach system that enables users to install or remove the silencer in seconds.
Includes 51T 1/2x28 Blackout® Flash Hider Mount. The baffle core of the 556-SD™ features 100% Inconel® 718 and full circumferential fusion welding to provide a lifetime of use under the most demanding conditions.
6.7" (5.0" added)
Inconel 718, 316L SS
*14.5” Colt M4 / 10.3” MK18, M855