So. I’ve got myself a very nice colt 9mm upper that needs a lower. It seems that it’s not
So easy to find a complete lower. Many striped lowers but I would like a plug and play.

Specifically, would like a lower with the mag well shaped for colt mags (I don’t like how the Glock mags look)

Suggestions on where to find one or experiences?

My SBR 9mm AR has a Palmetto State Armory 5.56mm plain Jane lower with 9mm mag block adapter. I have had absolutely zero issues with Colt or Metalform mags, and especially since it went through the SBR process I like having the ability to pull the mag block for 5.56mm use if desired.

Mines from CMMG. Dedicated Colt mag lower but it was bought a couple of years ago. I'm sure they are low on inventory but it couldn't hurt to check them out.

I too didn't like the way the Glock mags looked. I've built three with dedicated PSA Colt mag lowers. I had to send one back but PSA fixed it quickly. I've plenty of 5.56 AR's so I wanted a dedicated 9mm AR. I've no complaints about the quality of the PSA Colt lowers.
The current one that I use at Pistol Caliber Carbine matches runs flawlessly. It has a CMMG upper with a Spinta Precision 7.5" barrel, bolt and linear compensator. The handguard is from MidwayUSA.
It also runs a captive spring; an Armaspec SRS9 recoil system. That made a huge difference in the recoil characteristics.



Like almost everything firearm related, dedicated Colt 9mm lowers seem to be unobtainable. If I wanted one in a hurry, I would just buy some Endomags and use them with a regular (5.56) lower till I could find the appropriate lower.

Cmmg. I do not think Glock mags are an issue at all. I feel it is a big plus. I like Colt too, but would not shy away from Glock mag lowers.
Fox Trot Mike is a good to go lower as well.

While there is nothing wrong with Glock magazines. I did not own any and I don't like the way the mags are angled in a 9mm lower.

Besides, the OP says he has an actual Colt 9mm upper. Why in the world would he use a Glock mag lower? Since it is his dime and he wants a Colt mag lower, don't you think that is what he should get?

The Cmmg is a colt pattern. Take a cold shower

Which CMMG Lower would you all suggest. PSA is out of stock.

Model: MK-9

Not sure but Look up Fox Trot Mike: They might also make a Colt Pattern. They make quality stuff.

quote:

Originally posted by old rugged cross:
The Cmmg is a colt pattern. Take a cold shower

Hmmmm.....my 9mm CMMG takes Glock mags....have I been using the wrong mags all this time ??

CMMG makes lowers in Colt, Glock and Sig P320 FWIW.
CMMG is a good option for a colt lower if you can stand what is likely a very long wait time as is true for most everything from CMMG at the moment.
To me another and better option would be to find a colt 9mm lower, which I'm guessing is probably expensive but not unobtanium.
Lastly it is truly trivial to put a mag block in a AR lower. And in fact the factory colt one is made that way. The Hahn mag block is a fully developed and reliable option. Of course you have to change a few other parts as well, but none outside the normal AR maintenance skill set.

I have several of each of the above there really isn't any material difference between them.

Quareter Circle 10 is a high end manufacturer for lowers uppers etc.. They have Colt mag lowers, Glock and Sig226 lowers. Not sure of availability, but worth a look.

Also what about an Endo Mag? can use a standard AR lower with no mods and your 9mm upper. Have heard good things about them, but no first hand experience with one. Definitely would scratch the itch without going all in.

I do prefer the Colt mags as well. I have an early PSA Colt lower. They just look right, if that makes any sense.

The Hahn mag block mentioned is an excellent set up. I forgot about that. I have one and it is great vs a dedicated lower. Which I also have. Both Colt and Glock. For me the Glock looks better. So it is a personal thing. Good luck finding what you are after.

Meh. I don't mind the Glock pattern lowers.

I had a PSA 9mm AR with the mag block.
It worked fine with colt mags.
I ended up getting a cmmg glock version.

Have you considered these? I have the CMMG version of these that I use with my radially-delayed blowback gun. They are modified slightly as the CMMG bolt has it's own ejector, so there's no integral ejector in the mag, but otherwise I think they're pretty much the same product. They've been very reliable, and allow you to use a standard lower:

https://www.meanarms.com/products/detail/endomag-9mm

the PSA Colt pattern lower I have was the only available option when QC10 and DDLES were going through whatever legal spat they had. Were I to buy today, it would definitely be a CMMG lower. QC10 is nice but seems to be very small production lots so you'll be waiting a long time if not on the shelf.