B&T 3-chamber Compensator type APR for .308 Win caliber rifles M18x1 is an advanced, steel muzzle brake dedicated to sniper rifles with a mounting thread on the barrel M18×1 in .308 Win caliber. Thanks to the 3-chamber design, it significantly reduces recoil and muzzle rise (much more effectively than 2-chamber versions), improving stability and shot accuracy without a suppressor. At the same time, it serves as a QD base for quick mounting of Monoblock B&T suppressors caliber .308 Win (thread M27×1 LH). It is 100 mm long and weighs 200 g.