Suppressors that mount on A2 flash hiders

[SteyrAUG]

Gemtech HALO series was made specifically for use with A2 flash hiders, and have been around for decades. Griffin Armament has had some options for years, too.

The A2 was never designed to be a suppressor mount, so it ends up being a poor suppressor mount. You generally do not get a repeatable POA/POI shift, which can be several MOA. Most A2s are mounted with crush washers and not machined to very tight tolerances, so misalignment causing baffle strikes is much more of an issue. Dedicated suppressor mounts are a thing for an actual performance reason.

I see zero reason to use an A2 flash hider as a suppressor mount outside of some kind of institutional reason. The idea of being able to use your can between multiple guns just doesn't make much sense to me if you're using it for any kind of serious purpose, given the changes in POA/POI between suppressed and unsuppressed (especially if the shift is inconsistent), to say nothing of some of the optimization you might need to do to each gun if using a high backpressure can.

I've been running HALOs from the beginning (early 2000s) and never had a problem. Running strictly on Colts for the most part, zero issues...consistent POI.

It's one of the few cans that works on my HK93s and the only can that works on my SIG 550 and 551.

I've run them on select fire M16A2s, select fire M4s and 11.5 and 10.3 semi autos. Never a problem. If they get very, very toasty the expanding metal will lock them in place until they cool down enough to remove.

Honestly the mounting system isn't dramatically different from a SF suppressor.

The only "issue" I noticed is running them on a Colt 6520 which is a 16" pencil barrel, with a steel HALO (they now make titanium), you do get some barrel whip that opens up the groups a bit but that would happen with any can of the same weight.