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Old February 22nd, 2021, 12:17 AM #31
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Still curious why the foxtrot Mike uppers don't work on spikes. Lowers... But guess I'll pick up a aero upper instead
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Old February 24th, 2021, 06:50 PM #32
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Quote:
Originally Posted by Kevmo View Post
Still curious why the foxtrot Mike uppers don't work on spikes. Lowers... But guess I'll pick up a aero upper instead
It’s an issue with the bolt. I bought a Gen 1 YHM 9mm lower and it specifically said it would not work with a FTM bolt. I’m guessing that lower was build around the same specs as the Spike’s. I ended up using a Faxon 9mm bolt and it runs perfectly.
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Old March 8th, 2021, 01:51 PM #33
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Originally Posted by Russ D View Post
Itís an issue with the bolt. I bought a Gen 1 YHM 9mm lower and it specifically said it would not work with a FTM bolt. Iím guessing that lower was build around the same specs as the Spikeís. I ended up using a Faxon 9mm bolt and it runs perfectly.
interesting, i dunno if i wanna chance buying a FTM upper, then buying a new bolt for it, and still not have it work...
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Old March 8th, 2021, 08:36 PM #34
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Quote:
Originally Posted by Kevmo View Post
interesting, i dunno if i wanna chance buying a FTM upper, then buying a new bolt for it, and still not have it work...
FWIW I regret not getting the CMMG upper with their proprietary bolt system. My AR9 works perfectly but the CMMG shoots so much flatter.
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Old March 8th, 2021, 08:43 PM #35
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FWIW I regret not getting the CMMG upper with their proprietary bolt system. My AR9 works perfectly but the CMMG shoots so much flatter.
The recoil difference is significant.
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Old March 8th, 2021, 10:19 PM #36
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I’m a minimalist and a newb any reason to go AR9 over mp5 clone?
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Old March 8th, 2021, 10:22 PM #37
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Originally Posted by sead0nkey View Post
Iím a minimalist and a newb any reason to go AR9 over mp5 clone?
MP5 clone would be a better platform as it is delayed blowback. The exception would be the CMMG radial delayed blowback offering. Direct blowback requires a lot of mass to tame. My direct blowback AR9 has a 9 ounce buffer and uses a .308 buffer spring. My RDB gun uses a JP Captured spring. Much less felt recoil.
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Old March 8th, 2021, 10:24 PM #38
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Originally Posted by psybersapien View Post
I just got notification from Aero Precision yesterday on their PCC offering. Right now, they're saying 3/3/21.
https://www.aeroprecisionusa.com/epc
By the time I finally noticed they were sold out. Hopefully next time works out better. Well at least if there are issues I can find some reviews first

Quote:
Originally Posted by Kevmo View Post
interesting, i dunno if i wanna chance buying a FTM upper, then buying a new bolt for it, and still not have it work...
I'll be honest, I've heard so much PC type talk lately that Foxtrot Mike was not the first combination my brain processed for that acronym.
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Old March 9th, 2021, 06:44 AM #39
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Originally Posted by sead0nkey View Post
Iím a minimalist and a newb any reason to go AR9 over mp5 clone?
The ergos on the AR-9 kick the MP5's ass. Trigger weight, safety accessibility, ability to put on a long handguard, etc. Approximately zero serious competitive shooters use the MP5 platform for PCC, and there's a reason for that. I tried using an MP5-alike once at a falling steel match, and I felt like I was fighting the gun the entire time.

For AR-9s, CMMG can also provide a non-straight-blowback option (and JP will, too, eventually). Frankly, modern buffer technologies also provide a surprising amount of recoil mitigation - the days where dumping some sort of monster 10oz buffer into your gun was the best option are long behind us, thankfully.
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Old March 9th, 2021, 07:34 AM #40
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CMMG hunt begins! thanks guys!

this is for a spikes ar9 lower with bolt catch if anyone was curious.
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