Barrett Firearms Manufacturing
https://www.barrett.net/firearms/qdlsuppressor

What does a silenced .50 BMG sound like? I have no idea. I should, but we weren’t allowed to shoot it. The range where we were gathered today for the 2014 SHOT Show media shoot wouldn’t let us shoot it. So we had to sit back and look at it, which was almost as rewarding.

The rifle they brought (complete with crates of .50 BMG) is an M107A1 with a QDL suppressor. Part of what makes this ambitious suppressor unique is the two-port brake that is bolted onto its end. This helps reduce the recoil, while still cutting the sound signature, and it can be removed to further reduce the visible signature as well. The QDL slides over the muzzle brake and can be installed or removed in seconds.

Barrett was making noise. Their .308 is loud and on point. We got to shoot their MRAD in .308. Though the rifle has been out for a couple of years, it still rocks.