THOR ARMORY ST1 5.56 muzzle brake, 1/2-28. A two-chamber muzzle brake for 5.56 AR-15 carbines with a 1/2-28 thread, jointly developed by Thor Armory and ARMACON Arms Devices. It reduces muzzle rise and improves handling. Supplied with a crush washer. Its very low weight benefits firearm balance.
In stock:98
Dimensions: diameter 22 x 56 mm. 40Kh steel, carbonitriding, laser markings.
Packaging:Zip-lock bag.
Installation:A 17 mm wrench or adjustable wrench is required when fitting the muzzle brake with a crush washer.