KAK Industry

Integrated grenade ring gives the retro look you desire without hassle or extra parts. Can be used with a crush washer that's hidden in the grenade ring counter bore and not show once installed. Design inspired by the XM-177 Moderator, this extended flash hider will extend a 12.5" barrel to legal non-NFA length when pin and welded. Features : - "4.678" Overall Length" - Heat Treated - Phosphate Coated - Crush Washer Not Included - Clone Correct Muzzle Device for Colt 649/639/619/620 and XM177/177E1/177E2