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Pistol caliber ARs

Upper needs to be Glock mag compatible (bolt is cut differently than a Colt SMG style) and you'll need a pistol buffer and spring. The one in my 9mm gun is a 7.5oz Kaw Valley Precision set.
 
Does the upper come with the bolt?
Will need a different buffer spring.
 
Good to go it takes glock mags.
Just got the new buffer spring
 
Anybody know anything about the Christensen Arms 9mm Carbine?

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Good to go it takes glock mags.
Just got the new buffer spring
Have you shot this yet? I run a standard carbine spring and H3 buffer. It eats everything from 115 to 165 grain suppressed and unsuppressed.
 
I'll throw mine in. Glock mag lower, PSA upper, eats 124gr handloads out of Korean Glock mags. Not really sure what I should do with it unless I find some random match that is all pistol caliber though.
 

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New one. CMMG Resolute MkGs. Uses a rotating bolt like an AR, vs direct blowback like some other AR pattern PCC's. Will shoot it later today after cleaning it up a bit. I have Magtech 115's & 124's, 147 remans from Freedom, 124 Winchester Nato, 124 Speer Lawman, and some others I can't remember right now. ACOG is super clear as you'd expect, and reticle is tiny but for how I'm going to use it, the BDC will not get used much anyway.

Stock is super nice and all aluminum, Mlok made it easy to install a couple short sections of pic rail. (Bi-pod is only for picture purposes.)

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New one. CMMG Resolute MkGs. Uses a rotating bolt like an AR, vs direct blowback like some other AR pattern PCC's.
neat, that the one with the angled locking lugs?
sorta a delayed blowback kinda thing
 
neat, that the one with the angled locking lugs?
sorta a delayed blowback kinda thing
Yes

Supposed to reduce the shoulder crushing recoil of the 9mm round. :)


Haven't shot it yet, spent the weekend doing other shit but will report back when I do.
 
Yes

Supposed to reduce the shoulder crushing recoil of the 9mm round. :)


Haven't shot it yet, spent the weekend doing other shit but will report back when I do.
Better use a trap shoulder pad first, till you get use to it.
 
Zero'd the CMMG at 25yds with both the ACOG and a PA FFP 1-8x LVPO and then shot them out to 100.. My astigmatism has gotten worse and I could hardly use the SPARC on the NFA PCC, and the ACOG wasn't much better. The etched reticle in the LVPO is usable in both high and low mag, so that's probably what I'll run.

This one.
 
I like that.

I have a 1-6 SWFA thats been on a few different guns so far. I like it, but its a fat fucker. Keeps getting taken off and put back on the shelf.
 
I like that.

I have a 1-6 SWFA thats been on a few different guns so far. I like it, but its a fat fucker. Keeps getting taken off and put back on the shelf.
The PA 1-6x is just over 1lb, and for under $300 I think it's a hell of a deal. It's what I use in 3G, 1x with the illumination on for short range, 6x for long shots.
 
Yea that SWFA is about 1.5lbs New they were right at $1k. Didnt know about primary arms at the time. Found that swfa on sample list for about 50% off. These days the 2 AR's that see any use have 3-9x on them.
 
I am looking to build a home defense gun, i was thinking 9mm pistol AR would be sweet.
Something like psa lower, glock mags then something like a 7" barell with suppressor?
Do these cycle hollowpoints ok?
 
I am looking to build a home defense gun, i was thinking 9mm pistol AR would be sweet.
Something like psa lower, glock mags then something like a 7" barell with suppressor?
Do these cycle hollowpoints ok?

Haven't tried HP's in either gun, but I guess I should. I don't see why they wouldn't work just fine.
 
Something about these 9mm ARs that I’ve noticed this summer. None of the ones at matches I’ve been in have gotten through a stage without jamming, breaking, or double firing. Anyone else hear about reliability issues with the platform?
 
Something about these 9mm ARs that I’ve noticed this summer. None of the ones at matches I’ve been in have gotten through a stage without jamming, breaking, or double firing. Anyone else hear about reliability issues with the platform?
Mine runs 100%. 115 to 165 grains. They are probably running too stiff of a buffer spring and not using mil spec triggers. Double firing is a result of a buffer too light.
 
Something about these 9mm ARs that I’ve noticed this summer. None of the ones at matches I’ve been in have gotten through a stage without jamming, breaking, or double firing. Anyone else hear about reliability issues with the platform?
Never had a problem with mine...
Mine is not a race gun.
 
These are basic ar9 that newer guys buy or other guys buy for their wife to shoot competition. I don’t think they’re race guns necessarily.
Lots of people put in light triggers and recoil springs.
These cause problems.
Plus you get reloaders that do minimal power loads in comps.
All cause trouble.
 
Something about these 9mm ARs that I’ve noticed this summer. None of the ones at matches I’ve been in have gotten through a stage without jamming, breaking, or double firing. Anyone else hear about reliability issues with the platform?
My NFA would rip off 4 or 10 rounds from bolt bounce when running a pistol buffer system and a 16" barrel. Fun, but not right. With a standard carbine tube/spring/buffer/spacer it runs great.

The Ruger is ugly, but reliable right out of the box
 
Lots of people put in light triggers and recoil springs.
These cause problems.
Plus you get reloaders that do minimal power loads in comps.
All cause trouble.
That's the only thing about the Resolute I don't like. The trigger is much heavier than what I'm used to and has a very long reset, probably fine for the purpose of the rifle, but it's not what I'm used to. I might try dropping in a Timmney and see if it is reliable.
 
Oh, and changed the zero to 50yds. With a 25 it will be 1" low at 50 and something like 6" at 100. With a 50yd zero it's 1/2" high at 25, and exactly 1 mil low at 100 (3.6ish inches).

Also the recoil of course is not heavy for either the CMMG or NFA, but the NFA jumps off target quite a bit more than the CMMG, (shooting off a bench with bipod and rear bag), direct blowback has it's disadvantages. Taking a PCC course at Gunsite in the Spring, so I'll bring both and depending on what types of drills we do I may use both. The CMMG has the 1-8x LPVO and the NFA has the ACOG.
 
Borke the 9mm today. I'll have to call the manufacturer Monday and get a new mag release. Round went off out of battery and blew the mag out. Second time it's happened. Didn't break anything the first time. I'm certain the binary trigger is the cause.
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