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1/22/2020 12:12:56 PM
Posted: 11/19/2012 9:31:32 AM EST
Anybody have some pics of the M4 feedramps milled into the Aero Precision upper receivers. I may be needing a couple soon and the price is right on those assuming they have real M4 cuts like the ones found on Colt and LMT receivers, not the wimpy M4 "nicks" found on most other brands.

Thank you
Link Posted: 11/19/2012 9:39:14 AM EST
I'm at work so I don't have pictures, but the AP has M4 cuts that line up perfectly with my Wilson combat barrel.
Link Posted: 11/19/2012 9:55:17 AM EST
[Last Edit: 11/19/2012 10:08:12 AM EST by airgunner]
Originally Posted By charles_lee_ray:
I'm at work so I don't have pictures, but the AP has M4 cuts that line up perfectly with my Wilson combat barrel.


If you can take and post pics later that would be great. I'm not so much worried about them lining up (most seem to line up fine) I'm more worried about the depth. Thanks

ETA - Here are some pics I found that might help explain what I'm talking about...

Colt M4 ramps


Non-Colt M4 ramps



In both pics the ramps line up but the Colt ramps are much deeper (more than these 2 pics fully demonstrate IMO). On most non-Colt\LMT uppers that I've seen, the "cuts" are more like "nicks" as if someone took just enough material off to break the edge.

Link Posted: 11/19/2012 10:09:07 AM EST
I've got three of them next to me here in the safe. All I have to compare them to are the M4 cuts on my RRA upper. Let me go look...



Well, the M4 cuts on my 8" PSA 300blk barrel matches up really nicely, anyway...
Link Posted: 11/19/2012 10:12:10 AM EST
Looking at your photos, I would say these are "Colt style". Both in size (larger than the other photo) and depth (deeper, too!).
Link Posted: 11/19/2012 10:29:00 AM EST
[Last Edit: 11/19/2012 10:39:34 AM EST by motoguy]






HOLY SHIT! I just noticed I received a rusty barrel from PSA!

Link Posted: 11/19/2012 10:57:29 AM EST
Cool deal, those look pretty good! - Thanks for the pics!
Link Posted: 11/19/2012 11:39:21 AM EST
Originally Posted By motoguy:
http://i49.tinypic.com/m771bc.jpg

http://i46.tinypic.com/2nsowia.jpg

http://i50.tinypic.com/dpv401.jpg

HOLY SHIT! I just noticed I received a rusty barrel from PSA!



Assembly lube.
Link Posted: 11/19/2012 6:25:55 PM EST
[Last Edit: 11/19/2012 6:26:27 PM EST by dj_taboo]
My Aero upper has cuts like motoguy's
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