Just kicking around ideas right now for my 24" AUG barrel. Port pop is a major weak point with the system, but I'll tackle that problem eventually. (One perk of the NFA process is that it buys you a lot of time to work on other projects, no instant gratification here...)

I'm guessing that the Dual-Lok PSR 5 on the PSR flash hider might be the best overall performer for maximizing both sound and flash suppression. Nice thing about a bullpup is the additional length and weight of an OTB suppressor aren't much of a detriment. Thoughts? @Green0

@pomyluy

The Aug is probably threaded 13x1LH, and that would mean we don't make a PSR5 mount for it.  At 24" just about anything should be able to perform well on it.  The Recce 5K wouldn't be a bad idea on account of its shorter length.  I think they make devices to modify the Aug for suppressors and that would probably make sense.

https://v1tactical.com/product/steyr-aug-gas-regulator-for-suppressed-firing/

https://www.griffinarmament.com/taper-mount-minimalist-stealth-flash-suppressor/

Yup, I've got a couple of those suppressor plugs and they definitely help.

As far as I know, since ~2017 all AUG barrels are threaded 1/2x28, including all but one of mine (which is older). The real issue with the 24" barrel is it has quite possibly the stupidest profile I've ever seen along the first couple inches from the muzzle. Over an inch of threads, no shoulder, then a couple steps... an OTB mount faced off the muzzle would (hopefully) hide all that without cutting and rethreading the barrel. I'll try to get a decent pic for you, I'm sure someone thought that profile was a great solution to attach the bipod but it sucks in pretty much every way.

edit:

@Pomyluy

The PSR5 Flash suppressor should work, provided that large step on the barrel is under .775" OD.  That mount can muzzle face index.

It's supposed to be 0.775, although mine appears to measure 0.779-0.780. I'm trying to avoid modifying the barrel if at all possible, but Steyr really didn't make it easy.

Check your instant messages.

Received and replied, thanks.

@Green0 the PSR flash hider fits perfectly:



The factory-direct buying experience was exceptionally smooth - the entire process only took 10 days from purchase to certification. Next time it'll be even faster since I'm in Capitol Armory's system now. Just gotta decide if I want the M4SD-L or the Checkmate-HD next.



Can't wait to throw the PSR on my AUG in six months or a year or whatever (), I'm really looking forward to it. Thanks again for all your help.

Glad to hear that.  Both your rifles look really cool, but that Aug sounds interesting with 24” barrel. I would bet that will sound really exceptional.

90 days from purchase to delivery, well done Griffin and Capitol Armory both.

@Pomyluy

That's awesome.  90 Days is as quick as I've heard of in a long time.  The Aug looks cool.  Really glad it worked out for you.  Thanks again for your business.  We appreciate it.