AR15.Com - Rimfire and Pistol Calibers

PSA 9mm lowers

11/29/2023 11:15:54 PM

What is the deal with the PSA lowers only working with PSA uppers? I�ve got a aero upper. What�s the deal?The BCG? Won�t any&nbs...

Need help on a new 9mm rifle Springfield Victor 9mm or Colt AR6951 AR9

11/29/2023 1:03:35 AM

I was researching a Springfield Armory Saint Victor 9mm carbine rifle to order very soon, I mostly shoot 145 gr Speer lawman and&nb...

Converting 9mm colt style to Glock

11/28/2023 5:09:18 PM

I bought this upper probably 20 years ago. It is a RRA 16" complete upper for colt mags. What do i need to do to&nb...

9mm lower SBR dilemma

11/25/2023 9:04:13 AM

So I just got my form 1 back on my first SBR. With the cost of 5.56 I am turning it into a 9mm I had already had...

Anyone running the Taran tactical tti kynshot buffer system

11/22/2023 4:27:01 PM

I was piecing together a pcc and was going to go with a kynshot. I see that taran tactical sells one and figured it was&n...

Please evaluate challenge my thinking about our 22 LR solution

11/21/2023 4:12:05 PM

I've done a bunch of research and probably still have a lot more to do. I want my wife and I to be able to train on&n...

How to check suppressor alignment on 9MM SBR

11/18/2023 4:38:11 PM

Is there a rod I can get to check suppressor alignment on my suppressed 9mm SBR? I know Brownells has one for $60, I wanted&nbs...

New Frontier MP5 lower 22lr upper build

11/17/2023 4:53:03 AM

I have a New Frontier C-5 lower left over from a project.If I remove the 9mm feed ramp and ejector, is there a 22lr upper&n...

KynSHOT RB5000HP vs RB5007 in CMMG RDB

11/13/2023 7:05:15 PM

I find a lot of threads mentioning the RB5007 with the CMMG RDB set-up. However, KynSHOT recommends the RB5000HP for that set-up. &...

QC10 Side Charger Upper compatible handguard

11/13/2023 12:34:36 AM

Guy I have a QC10 side charger upper. It is thicker than a normal ar upper receiver. Anyone know who makes a handguard that wil...

45 ACP DI in front charging Foxtrot Mike 15 bufferless upper build idea noodling

11/9/2023 1:55:40 PM

I've been noodling around the idea of doing a .45 ACP build for some months now, and a bit ago I saw @Mad-Machin...

AR9 SD thoughts

11/7/2023 2:57:29 PM

Im considering assembling an AR9 pistol basing it around the TPM outfitters / Hitecarms suppressed kit with a lower that uses MP5 magazin...

standard lower adapted to 9mm options

11/5/2023 3:45:45 AM

I'm in the cesspool of NY and have a couple lowers I haven't used yet (new lowers require pistol permit which I do have but&nbs...

Bore Buddy AR reliability kit Before and after

11/3/2023 4:15:28 AM

I made a short 2 minute video of the results here. No more bolt bounce. [youtube]fJLzTVx5rRI[/youtube]

1 2 x 28 barrel extenders

11/2/2023 4:44:18 PM

I'm running a 1/2 x 28 threaded barrel that doesn't stick out of my handguard on my 9mm SBR. Just ordered a silencer for it,&nb...

Fake Suppressor

11/2/2023 3:10:49 AM

Now before some laugh and ridicule.. I need a fake suppressor.. The reason being is I have a AR 22 Pistol with a 4.5 inch ...

Recommendation for ammo to use with 4 22lr barrel and suppressor setup

10/30/2023 3:25:36 PM

I have a Deadair Mask HD that I am putting on a .22 build. I ordered a 4 inch RTB barrel and RTB bolt setup and Black...

Black creek precision 9mm glock lower can I put on psa upper or rtb upper on it

10/29/2023 2:01:39 PM

I have a SBR black creek precision glock 9mm that was built by Rudy at Macon armory. It was a bit of a special project&nb...

JP 22 Conversion Accuracy

10/26/2023 9:56:40 PM

Anyone here have the 18" conversion? With the right ammo is 1 MOA possible at 100 yards?Curious how well one might perform in&nbs...

Glock lower

10/26/2023 2:34:28 PM

I�m thinking of putting together a glock mag 9mm pcc for my son. Upper is a aero w/o forward assist, faxion 16� lightweight barrel,&...

10mm Buffer questions

10/23/2023 10:18:52 PM

I have a Bear Creek 10mm AR on order (16" barrel). Most of the reviews say that replacing the stock (8 oz?) buffer with a...

AR 9 not cycling properly

10/22/2023 10:44:37 PM

This was the 1st range trip for this rifle. RTB complete upper, KVP 7.5 oz buffer & XP Spring. Running a Stern Defense Glock ma...

Buffer spring

10/22/2023 10:32:46 PM

Building a 45acp Ar. I am using Rudy's buffer, buffer, and bcg. Which carbine spring do you guys run? Standard or a extra power ...

Is this new SandW mag ok

10/20/2023 8:27:47 PM

I just received this S&W 10 round mag from Midway. Isn�t it supposed to have a button to assist in loading the mag? I�ve...

Question for the Pistol Caliber hive Colt pattern 9mm AR15 related

10/20/2023 4:47:58 AM

So I have a 9mm Colt pattern rifle built on a Colt 9mm kit that has a gray A1 9mm upper receiver on a Spikes 9mm lowe...

Cmmg 22 lr mag compatibility

10/17/2023 12:10:27 AM

Has anyone tried the M261 mag inserts with a CMMG 22 lr conv...

Best magazines for a dedicated AR 22 build

10/15/2023 3:17:51 AM

I started a thread on this topic months ago and now I can�t find it. Pretty sure after considering them all that the S&W ...

MandP 15 22 right side selector notches

10/14/2023 3:18:31 PM

Hi all, looking to purchase my first AR and have decided to start with the M&P 15-22. I'm planning on installing an ambidextrous sel...

Who makes Right To Bear BCGs

10/12/2023 9:20:24 PM

Anyone know who makes their BCGs? 9mm specifically.

KAK K SPEC spring cushioned buffer PCC test results

10/8/2023 11:56:17 AM

Looks like no-one has posted about this yet. I purchased a 9.5oz.