Need help building a 9mm AR

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BlakeJ
Silent But Deadly
Posts: 174
Joined: Sun Mar 07, 2010 2:56 pm

Need help building a 9mm AR

Post by BlakeJ »

I know a lot of you guys have built 9mm ARs for your cans, and I was wondering if you gurus could help me with a parts list for one that I wanna put together. I've put together numerous ARs but never a 9mm.

The can I'm going to be running is a tirant45. I'm going to SBR it, with probably a 5" (give or take) barrel. I would like the handguard to cover up at least half of the can. I really wanna run a MVB ARC stock (or something similar). I also want a dedicated 9mm lower, with the small mag well. If possible I would like to run the curved mags, but it's not a deal breaker.

I'd like to save money on parts where I can, but not sacrifice reliability.

Any help is appreciated!
pjames6
Member
Posts: 18
Joined: Tue Nov 11, 2014 4:56 pm

Re: Need help building a 9mm AR

Post by pjames6 »

http://i.imgur.com/sEqpCWE.jpg

If you want to see it in action.

https://www.youtube.com/watch?v=D0cnF6H ... be&t=1m53s

Liberty Mystic
Gemtech 3-lug adapter
Tros 5" 3 Lug Barrel
Quarter Circle 10 Lower
JP Bolt (can go cheaper here)
JP Silent Buffer (can definitely go cheaper here)
PSA blem upper (when they have them)
Seekin's 7" BAR rail
Magpul SL furniture
EOTech 553
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themonk
Silent Operator
Posts: 75
Joined: Sat Jan 18, 2014 10:16 am
Location: NOVA

Re: Need help building a 9mm AR

Post by themonk »

I did a cheap build (colt pattern) just to test it out and I have fallen in love:

Ballistic Advantage 5.5" 9mm barrel
HK Tri-lug adapter from HK Parts (can is a tirant 9)
CMMG Bolt carrier - you can use it with any AR trigger
CMMG Ejection Port Cover Kit, with Gas Deflector
Rainier slick side upper reciver
Crappy rail from ebay for testing that is getting replaced by a URX 4
Hahn bottom loading mag block for colt mags - makes any lower compatable as I switch it between a pistol and SBR lower
Spikes ST-9X heavy 9mm buffer
Wolff extra power spring
I run Metalform mags and have never had a hickup - get the ones from PSA as they are half the price and the exact same mags
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Killerapplesauce
Senior Silent Operator
Posts: 124
Joined: Thu Oct 30, 2014 9:25 pm

Re: Need help building a 9mm AR

Post by Killerapplesauce »

Barrel-
Ballistic Advantage (5.5 inch 1/2x28 threads 1:10 twist) http://ballisticadvantage.com/shop/barrels/9mm.html
KAK (4.0 inch 1/2x36 threads 1:10 twist) https://www.kakindustry.com/ar-15-parts ... ite-barrel
KAW (4.0-4.5 1/2x36 threads 1:10 twist) http://www.joeboboutfitters.com/9MM_AR1 ... 158504.htm

The Lower Receiver- (Depends if you want to use Colt style 9mm magazines or Glock magazines.)

Colt Mags Lower- CMMG, https://www.cmmginc.com/shop/lower-rece ... m-mk9-smg/

Glock Mags Lower- Quarter Circle Ten, https://www.quartercircle10.com/product ... ame-lower/ (Buts needs a bolt with a special Glock cut on it for the Glock Mags)

Bolts-
JP 9mm bolt, https://www.jprifles.com/buy.php?item=JPBC-9MMA (Compatibly with both Colt style, and Glock style Lower Receivers and is ramped so you can use a mil spec LPK with a mill spec hammer.
CMMG makes a good ramped bolt too but doesn't have the Glock cut on it so it is only compatibly with the Colt Mags.

Buffers- (need a special buffer for 9mm)
Heavy Buffers, http://heavybuffers.com/9q.html
JP Enterprise, https://www.jprifles.com/buy.php?item=JPSCS2-9M

Handguards-
Midwest Industries, https://www.midwestindustriesinc.com/in ... ry_ID=2519
YHM, http://yhm.net/accessories/forearms/slk-handguards.html

Both have anuff room for a suppressor under the handguard there are some other but can t think of them right know.

I would also go to AR15.com and look under the pistol builds in the forum a lot of good info hoped this helped Cheers.
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