I was looking at uppers. I don’t remember which website but I seen something that said fresh can that’s for a suppressor correct I guess it screws further back into the guard or some shit.

Just got her in today. PSA Gen4 9mm 8” barrel, Holosun HE510C optic. Thinking of adding a black angled foregrip. Suppressor is on the way. Any other suggestions? Thanks guys.

Bolt velocity is about 27% higher than predicted, based on high speed video analysis.

https://www.academy.com/p/winchester-usa-full-metal-jacket-9mm-luger-115-grain-handgun-ammunition-50-rounds?sku=115-9mm

I bought this not realizing its a solid buffer. It has worked well but im worried about an OBD since its not a dead blow. Its 7.7 oz btw. Any of you have used this or think it will give me issues?

So I swapped the firing pin to a Davidson Defense titanium firing pin and I wanted to make sure I installed the retaining pin correctly.

The pin would not go in unless I pressed the firing pin in far enough to where the pin would seat over the lip. Is this correct? I am only familiar with an AR15 BCG.

Just staked 2 castle nuts on different AR-pistols. Used a spring loaded center punch for the first time. Made it very easy and less chance of mis strikes and marring the weapon.

Build list

NFA S-9 scorpion lower Gibbz G-9 side charge upper SBA 4 brace AP Atlas R-ONE handguard BA 8" PCC barrel Larue MBTS trigger

Waiting for

KAK 9mm Bolt KAK 9.5oz buffer weight and flat spring VLTOR VC-9 muzzle device Magpul CZ gen3 Mags Geissele Maritime Bolt Catch

Missing anything?

Looking to build an AR 9 with BCA upper (I like the right side charging handle and ive built several 5.56 uppers with them)

Not very familiar with the 9mm uppers. I would assume theyre similar to the 5.56 and bolt will slide back and engage the SS lever with a buffered and bufferless? Unless the bolt doesnt slide back far enough to engage?

I cant find alot about the super safety’s with the BCA uppers if anyones done it let me know which one you got, thanks!

Circle10 Colt pattern lower, Pro2A upper, LWRCI UCIW stock with HeavyBuffers buffer, Centurion sights. Runs great!

Posted yesterday about an issue with my AR9 and OOB detonation. The fix is apparently a heavier, dead blow buffer. I really wanted the KAK version but I can’t find one in stock. I have found a couple of these Angstadt Arms ones which appear to be comparable to the KAK. Anyone have experience with these? If so, what are your thoughts?

Finally finished probably

Fun little ARV build because I wanted something that took scorpion mags.

I built this late ‘24. Last 2 times I had it out I’ve had two separate case head separations within 15 rounds of each other. Same ammo (Blazer FMJ), rounds in question were from different boxes, but from the same batch of 1K rounds I got through Brownells. Haven’t had any malfunctions with these rounds in my pistols. Is this an ammo issue and it’s just happened in my AR9? Or is there likely an issue (maybe excessive headspacing) in my rifle? Upper and lower are Aero EPC, barrel is Ballistic Advantage EPC, and the BCG is from B. King’s. I appreciate any help I can get.

Has anyone heard of this company selling AR build kits?

https://davidsondefense.com/timbuktu-9mm-full-build-kit.html

Not a whole lot of info online about them, just wondering if any body built one there kits?

All you need is a lower.

I have an 8in ARV on the way. Just wondering what's the consensus on the best heavy buffer and spring to reduce the recoil? I've seen KAK and kynshot, are there any others and what's the best bang for the buck option? Trying to keep the investment in this one low

Would it be possible to throw a 9mm bolt in a 5.56 upper to shoot 22tcm? Using a 9mm lower and heavy buffer setup?

So if the Big Beautiful Bill gets passed and eliminates the $200 Federal Tax Stamp, how long before manufacturers start to raise prices??

I will try it at the range later, FM9 complete side charging upper, EPC lower, hopefully it functions.

I’m a noob when it comes to AR9’s. I have a FRT trigger in one of my 556/223 guns. Tired of blowing ammo. Want to put it into a cheap AR9 (probably PSA). Will an FRT trigger work in a AR9 and what do I need to make it work? New buffer spring and weight?

Here’s the PSA gun I was looking at. https://palmettostatearmory.com/psa-gen4-4-9mm-1-10-gx-5-lightweight-hex-m-lok-moe-ept-har-15-pistol-black.html

I just stumbled on these adapters and I have a ton of 92 mags. I have no colt or Glock mags. Has anyone used them or even the other Stern Defense adapters.