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Page AR-15 » Build It Yourself
AR Sponsor: bravocompany
Posted: 5/3/2024 12:29:09 PM EDT
I installed a 16" mid length barrel (with M-4 ramps). When I checked for alignment of the barrel extension ramps and the upper cut outs, I noticed there weren't any. I guess I grabbed the wrong upper.

It's got about 100 trouble free rounds through it, and I'm not seeing any scraping on the finish of the rifle upper from the cartridges feeding.

Should I change the upper out for one with M-4 extensions, or am I good to go?
Link Posted: 5/3/2024 12:58:14 PM EDT
[#1]
Originally Posted By rsqhobbs:
I installed a 16" mid length barrel (with M-4 ramps). When I checked for alignment of the barrel extension ramps and the upper cut outs, I noticed there weren't any. I guess I grabbed the wrong upper.

It's got about 100 trouble free rounds through it, and I'm not seeing any scraping on the finish of the rifle upper from the cartridges feeding.

Should I change the upper out for one with M-4 extensions, or am I good to go?
View Quote

Rifle upper, M4 barrel, not ideal but not bad
M4 upper, rifle barrel, bad
Link Posted: 5/3/2024 12:59:57 PM EDT
[#2]
You are fine.  Pic for confirmation.



Link Posted: 5/4/2024 11:56:51 AM EDT
[#3]
Thanks for the input, guys. I appreciate it.
Page AR-15 » Build It Yourself
AR Sponsor: bravocompany
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