Thank you sir...I appreciate it
Sure thing. I’m......frugal.
Thank you sir...I appreciate it
Sure thing. I’m......frugal.
Thank you for the input. I found a 9mm bcg with forward assist serrations for $99 on sale. I want to use an upper with a forward assist bc I like the way they look. I have already assembled one AR, so I have or have access to the tools needed. I don't have a bore scope like DA has though I've never heard about the low mass 9mm hammer, so that's good info to know. Thank you for the help
Does the new barrel+bolt from CMMG work with other upper parts?
Does the new barrel+bolt from CMMG work with other upper parts?
Yes. Installed mine in a standard AR upper. Raptor CH.
Also check out kaw valley precision. I just finished a 9mm build last month and used their barrel,bolt,buffer, and hanguard with spikes upper and lower recievers. I am very pleased with the build but my lrbho only worked after first mag dump, I have to get that bug out yet.
This is very interesting. How does it shoot? I shot Mp5 before, it was way way better than my blowback 9mm.
Most times a shaving of the buffer 'bumper' is needed. Just go slow.
Most times a shaving of the buffer 'bumper' is needed. Just go slow.
when i put in a empty mag and pull back the charging handle the bolt will stay open. For some reason it won't after shooting the last round whats your thought on that ?
In a DI gun, I would think over-gassing/high bolt speed, but we're talking about blow-back. What kind of action spring do you have in there? Is the lower a Colt design or a Glock? Dedicated or hag block?
BTW, my QC5 can't lock back when empty because of the design.
My lower is a dedicated glock mag from spikes.I am using a standard carbine spring, i was wonder if i should chang it to something heavier
Tested my CMMG vs my other 9mm AR.
Suppressor: Gemtech 9mm Multimount
Ammo: Freedom Munitions 147g Hush
Gun 1:
DDLES lower
5” TROS 3-lug barrel
Colt pattern mags
CMMG 9mm BCG
9Q 8.5 ounce heavy buffer
Tubbs .308 AR spring
At the muzzle: 10 shots average - 114.6 dB.
At the ejection port: 10 shots average - 113.2 dB
Gun 2
80% lower (same as CMMG uses)
Glock mags
8” CMMG barrel w CMMG bolt (Guard/radial delayed)
JP 9mm captured spring with 4 tungsten weights
Average at muzzle (10 shots) - 114.4 dB
Average at ejection port (10 shots) - 116.3 dB
My mistake: grabbed HK mags instead of Glock so did not have a mag in on
The second rifle.
The felt recoil on the CMMG build was notably lighter. You can feel the reciprocating mass on rifle #1. Gonna play with the weights in the CMMG build and see if I can lessen ejection port bark.