STS 556 Muzzle Brake System

The OSS STS 556 Muzzle Brake System is a standalone muzzle brake that effectively reduces recoil, muzzle rise and flash.

GSA Exclusive

STS 556 Muzzle Brake System
STS 556 Muzzle Brake System
The STS system also serves as a suppressor mount for 5.56mm integrated flush mount suppressors and the OSS Blast Shield.
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