The Engaged Industries Operator 5.56 is a full length reduced diameter 5.56mm rifle silencer possessing a secondary retention mounting system that is simple to operate.  The silencer also has lower back pressure than several competing models; the suppression performance of the silencer is relatively balanced, especially for its size and weight. Notable aspects of the silencer’s performance include its consistent signature and only moderate first-round-pop.  At 1.5-in diameter, and less than 16 ounces including its mount system, the Operator 5.56 performance is relatively competitive in the broad 5.56 silencer market.

In this review, the Engaged Industries Operator 5.56 performance metrics depend upon suppressing a supersonic centerfire rifle cartridge on a short-barrel gas-operated rifle, which is an incredibly difficult task. How would the Engaged Industries Operator 5.56 perform on your MK18 with a 10.3-in barrel?