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11/22/2017 10:05:29 PM
Posted: 9/30/2004 3:34:17 PM EST
Thanks for your help.
Russ
Link Posted: 9/30/2004 3:37:30 PM EST
I believe the M4 feed ramps are a Colt patented design.

Someone correct me if I'm wrong here.
Link Posted: 9/30/2004 3:38:26 PM EST

Do Bushmasters new M4 rifles have the M4 feed ramps cut into the upper reciever like the Colt?



None that I have seen.
Link Posted: 9/30/2004 3:39:53 PM EST
Just looked, nope, they are different.
Link Posted: 9/30/2004 3:59:06 PM EST
I bought two M4 uppers directly from BM last week and neither have M4 feed ramps.
Link Posted: 9/30/2004 4:01:42 PM EST
The feed ramps, unlike the double heatshield handguards, are not patented.

BFI uppers do not have the feed ramps. LMT and CMMG uppers do.
Link Posted: 9/30/2004 4:31:11 PM EST

Originally Posted By imposter:
The feed ramps, unlike the double heatshield handguards, are not patented.

BFI uppers do not have the feed ramps. LMT and CMMG uppers do.



Aha, I stand corrected.
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