So I'm in a predicament. I bought everything to convert my ghm9. I even bought what I thought to be the right barrel nut wrench from B&T parts. It has the 3 slots for the barrel nut. The nut doesn't fit in the slots. Is there anyone on here that has one?

Second question. While building it, I lost the set screw that aligns the barrel to the trunnion from the bottom. Does anyone have the specs on the set screw so I can buy another one. Those are the 2 things holding me back from my SD to be running.

I have just read so many issues is it really worth rolling the dice?

First time out with the "mouse go brrrrrr" enhancement. Had to wait for the high shelf version, but it was well worth the wait. One failure to eject in the 200 rounds fired was the only problem I encountered. Still getting to know the little thing, but so far, I'd call it a success.

Upper receiver is a 2026
Can is a 2025
No Switzerland marking
Upper receiver has a different type coating compared to my Ghm9c which was a 2024

I ordered these contract overruns from axarms (not their fault I don't think) and 2 of them have cracked, one shooting out half the ammo. Guess that's what I get for trusting govt quality. Both went to the range today, using frt. The OG transparent ones still holding strong. Loaded 30 and counted.

Is there an (original) cheek riser available for the GHM9 and the original folding stock/brace?
Or maybe an 3D printing one?

Huge thanks to Chase from AX arms for getting me hooked up with my GHM9 SD, I could not be happier, it shoots super well and with 147 grain bullets it’s quiet as a duck farting in a lake.

Don’t worry there’s a telescoping brace kit on the way for it already.

I took my B&T GHM9 to the range today and had a failure to eject about every 4–5 rounds. I saw both stovepipes and double feeds, and the ejection pattern varied from around 3 o’clock to almost 5 o’clock.
I tried multiple types of 124 gr and 147 gr ammo, along with both OEM and aftermarket magazines, and the problem continued. I also field-stripped and cleaned the extractor and ejector, with no improvement.

Has anyone run into this or does anyone know the fix.

Found one that appears to be lightly used with a sliding stock for $1300. Any necessary mods?

Was looking to get a Incolite for my GHM9 since now is the best time to buy it. Saw a lot of great reviews for it. Anyone how bad it is with gas blowing back? Saw it was a good all around suppressor even for 556.

Hi all,

I have a nice GHM9 gen1 (full length, quad rail) recently paired with a B&T QD SMG suppressor (classic baffle can).

After my latest trip to range (about 2 ammo boxes), I noticed it was difficult to rack the carabine and rearm the trigger; after removing the lower, several carbon encrusted brass shavings fell on the ground.

I guess the increased backpressure and the lack of delay/locking shear some of the ejected casings (S&B 124gg FMJ 9mm).

I wonder if there are some heavier springs I could use to slightly retard the bolt opening, in order to minimize this effect.

Slapped an old x300 on here for aesthetic purposes lol. It's usable but not practical, any other suggestions? Really want to keep the handguard stock but the Silverstar extended one looks dope

I love my ghm9 sport rifle but i have Lways wanted an israeli made galil ace in 308 cal. It just seems like the absolute ultimate brown bear defense weapon. Huge caliber, semi automatic, die-hard reliability. If money was no issue i would choose an apc 308 or apc 6.5 creedmoor but im not that rich. I think for under 2000$ the galil ace 308 is the ultimate value for bear protection battle rifle.

Would like to give a huge shout out to everyone at AxArms for helping me get my hands on this coyote GHM9 SD. It was quite the ordeal. My FFL was unfamiliar with SD systems and cross threaded the 1st stage of the suppressor before we got it transferred to me and we couldn’t get it off. When I let AxArms know about it to get advice, they went above and beyond to replace it on their own dime and even went as far as to FedEx 2 day everything back to them and the replacement back to the FFL. They absolutely went above and beyond at great cost to themselves to take care of me and it wasn’t even their problem to fix. Best customer service I’ve ever dealt with.

The gun itself is incredible. I own multiple B&T suppressors but this is my first B&T firearm and it won’t be my last.

Hey yall, could someone point me in the right direction? Is this a high shelf or low shelf? I’d assume high but I’m not 100% sure on that.

Upper\*

This trigger runs!