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Page AR-15 » Build It Yourself
AR Sponsor: bravocompany
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Posted: 2/26/2021 8:37:48 PM EDT
I have a plain Jane upper that I’m putting a BCM QRF on, I am wondering if the rail has enough room to fit a shaved down front sight post/gas block. I had a seekins sar3 rail where it wouldn’t fit.
Link Posted: 2/27/2021 7:47:52 PM EDT
[#1]
You can shave a pinned FSB down lower than a low profile gas block.  I have fit them in really narrow MI rails no issue.
Link Posted: 2/27/2021 8:07:44 PM EDT
[#2]
It can fit.

Link Posted: 2/27/2021 11:16:10 PM EDT
[#3]
I had a seekins sar3 rail where it wouldn’t fit.
View Quote


Then you just didn't grind enough.
Link Posted: 3/8/2021 4:30:24 PM EDT
[#4]
It damn sure will!  That’s a Colt OEM-2 upper.

Link Posted: 3/14/2021 12:57:13 PM EDT
[#5]
That’s a nice rig
Page AR-15 » Build It Yourself
AR Sponsor: bravocompany
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