View Full Version : Is CMMG the best 9mm bolt?
When you are building your own? I've heard lots of good things (and a couple bad) about New Frontier's 9mm bolt and it can be had for $60 less.
Doing a Colt style rifle, have most of my parts planned. Already have my dedicated PSA lower assembled.
Not_A_Llama
11-20-2016, 00:34
I really like my Nitrided Spinta blem bolt. Can't tell if it's the bolt or my mags, but it's dragging on a lip of my Creative Products mags.
There are quite a few to choose from these days.
Angstadt Arms: https://angstadtarms.com/product/9mm-bcg/
CMMG: http://www.brownells.com/rifle-parts/bolt-parts/bolt-carrier-groups/ar-15-m16-9mm-enhanced-bolt-carrier-group-prod27417.aspx?avs%7cCartridge_1=APP_9%2bmm%2bLuge r
Colt: http://www.brownells.com/rifle-parts/bolt-parts/bolt-carrier-groups/ar-15-m16-9mm-bolt-carrier-group-prod70971.aspx?avs%7cCartridge_1=APP_9%2bmm%2bLuge r
New Frontier Armory
Kaw Valley Precision
JP Enhanced BCG
http://www.joeboboutfitters.com/9MM_AR15_Bolt_Carrier_Groups_s/163737.htm
Spinta Precision: http://www.spintaprecision.com/9mm-nitride-bolt-carrier-group-sale/
JSE Surplus: http://www.jsesurplus.com/9MMBoltAssemblyGlockCompatible.aspx
PSA: http://palmettostatearmory.com/oem-psa-g-9-hybrid-9mm-bolt-carrier-group-w-logo.html
Mid State Firearms: http://midstatefirearms.com/9mm-Nitride-Bolt-Carrier-Group-for-Ar15-Ramped-Glock-Colt-9mmbcg.htm
Just to list a few. I'm certain there are more out there.
Something else I thought was worth a mention (as I too am doing a PDW 9mm AR build soon), with PSA it is not uncommon for their products to not be compatible with other manufacturers. I'm going to be using a lower that will be compatible with Glock magazines. It's what I currently love to run and I know they work. It keeps it compatible with my handgun. Best of luck with your build. Probably look at starting mine after the holidays. I just ordered my parts to build my Form 1 suppressor so I gotta save up a bit now.
mtnrider
11-20-2016, 09:37
Can't comment on any other bolts but I am using the CMMG (with Spikes 9mm buffer and Wolf extra power spring) on myQC10 Colt pattern and it seems to be working fine.
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I have a Rock River and a JP bolt.
Both work flawless.
MilehighGS
11-21-2016, 06:58
I have a KAK BCG and has run flawless putting 200 rounds thru it so far.
TriggerHappy
11-21-2016, 08:23
Anyone ever use these guys? I might order something after the new year. I have a QC10 Glock to build.
http://www.kawvalleyprecision.com/product-p/kvp-9mm-bcg.htm
I have used a CMMG since 2012, no problems at all.
thedave1164
12-08-2016, 21:47
I have a new frontier bolt, I believe it is a hybrid, I am using it with a billet lower that uses Glock mags
In my very limited experience, all AR-9 bolts are equal as long as you choose the correct platform (Ex Glock vs Colt).
I ended up with a Spinta Precision bolt.
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