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Centerfire Rifles - Semiautomatic or Gas Operated Centerfire rifles, carbines and other gas operated rifles.

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  #1  
Old 01-21-2011, 3:13 PM
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Default 9mm AR Lower Receivers

I'm looking to build a 9mm AR complete rifle; mainly for the cost of ammunition and all the indoor ranges by my house in Orange County don't allow rifle calibers to be shot unless you're a LEO. So I'm considering starting off with the lower receiver segment of the build.

I was looking at Spikes Tactical's 9mm AR Adapter, but then I came across the CMMG's dedicated 9mm lower receiver. I don't have any experience with either product. Which would you recommend I go with?

The Spikes Tactical magwell block is $134.95 (which doesn't even include the lower).

The CMMG's Dedicated 9mm lowers are going for $175.95 on their website.

Any advice on either 2, or pointing me in the direction of another product would be much appreciated
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Old 01-21-2011, 3:14 PM
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Another deciding factor is the mag use. Spikes claims on their website that their adapter works with the following magazines: -Spike's Tactical/Metalform

-Metalform

-Modified Uzi

-ProMags

-Colt/Metalform

-Beta-C drums

-Cproducts

Where as the CMMG claims it's only compatible with Colt and modified Uzi style magazines.
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Old 01-21-2011, 3:36 PM
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If you have any standard cap glock mags Olympic Arms and Lone wolf make ar-15 lowers that take 9mm glock mags.
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Old 01-21-2011, 4:28 PM
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this might help you:

http://www.calguns.net/calgunforum/s...d.php?t=250448
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Old 01-21-2011, 4:43 PM
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Quote:
Originally Posted by joelogic View Post
If you have any standard cap glock mags Olympic Arms and Lone wolf make ar-15 lowers that take 9mm glock mags.
Be careful with Olympic Arms. There are some that are on the ban list.

Olympic Arms
AR-15
Car-97
PCR (all)
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Old 01-21-2011, 6:29 PM
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A dedicated 9mm lower is always going to be more reliable than then magwell adapter models. The adapters can shift position, be picky on placement, and come loose--I have found that liberal applications of loc-tite fix these issue though.

I have a dedicated RRA 9mm AR Pistol that I'd love to sell you if you are interested Functions 100% and low round count
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Old 01-21-2011, 8:17 PM
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We have the CMMG dedicated lowers in stock for $219. When you consider transfer fee and shipping, ours is about the same price. I'm surprised ours is priced higher than on CMMG's website. They may have lowered the price on it since our purchase.
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Old 01-21-2011, 9:16 PM
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This is my 9mm built on a CMMG lower. The CMMG's are great and I highly recommend them. You save $150 on the magwell adapter.



Compatible with all the same mags as the Spikes. Colt/Metalform/Uzi/C Products/Pro Mag/C products, etc... I use the standard 10rd C products and they work great.
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Old 01-21-2011, 9:33 PM
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Check out these Guys >>>> They made their lower smaller to accommodate the 9mm caliber......very unique, very nice!

http://shop.doublediamondsupply.com/main.sc

http://i982.photobucket.com/albums/a...mlowerpic4.jpg

Good luck on your build

Last edited by Gatekeeper; 01-21-2011 at 9:47 PM..
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Old 01-22-2011, 10:06 AM
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Thank you everyone for the info; I'll probably go with Rifle Gear since I'm like 8 miles away. Lol I'll post pics up ASAP.
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Old 01-22-2011, 10:21 AM
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Pacman great info btw; thank you very much. You planted some ideas in my head for sure!
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Old 01-22-2011, 10:34 AM
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Quote:
Originally Posted by 762.D3A7H View Post
Pacman great info btw; thank you very much. You planted some ideas in my head for sure!
np, have fun with our build! let us know how it turns out.
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Old 01-22-2011, 12:16 PM
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Quote:
Originally Posted by Don29palms View Post
Be careful with Olympic Arms. There are some that are on the ban list.

Olympic Arms
AR-15
Car-97
PCR (all)
The Olympic Arms AR/Glock lower is marked GL-1.
So, it is considered off-list.
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Old 01-22-2011, 12:23 PM
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I have built up three 9 blow back ars. Reliable mags is the key to any reliable build. I have settled on a cmmg dedicated lower now but only half of my mags work reliably in it, which is better than my conversion block efforts.

Going forward, I think a lone wolf g17 ar would be a good way to go being that glock mags work and are known to be reliable.

The mgi hydra also looks interesting but I have not heard good things about it. I would like to have a 45 acp carbine and think the hydra would be fun to build up as a complete rifle.
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