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Page AR-15 » Optics, Mounts, and Sights
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Archived [ARCHIVED THREAD] - Running a Magpul BUIS Pro with Fixed front sight
Posted: 2/25/2021 8:24:38 PM EDT
Are there any issues with running a Magpul BUIS PRO with a fixed front sight? (It will be on a Colt 6933 if that matters.) From what I have watched and read the Pro series is shorter than other sights. I also cannot find any photos of the Pro with a fixed front sight. Makes me think it won't work.

Thank you,

Alan

Link Posted: 2/25/2021 10:25:24 PM EDT
[#1]
Not aware of an issue in conjunction with a standard front sight. They lie flatter (versus when deployed, standing up) than some others but there's no reason not to use one if that's what you want.

Link Posted: 2/25/2021 10:50:56 PM EDT
[#2]
M4 standard aperature height is 1.4"(?) above top rail, IIRC.


MP PRO rear is listed as 1.41 ".

ETA: MP MBUS rear is listed as Center of aperture to top of rail: 1.42 in.

Either will work in conjunction with a FSBGB.
Link Posted: 2/26/2021 1:00:56 AM EDT
[#3]
Thank you both for your help.

Link Posted: 2/26/2021 3:11:02 AM EDT
[#4]
Magpul MBUS Pro rear sight (folded in this photo) with fixed A2 front sight.  Leupold Deltapoint mini-reflex set at absolute cowitness.

All work well together.  The Magpul MBUS Pro delayed length is designed to work with standard A2 fixed front sight.  I had no problem whatsoever zeroing it.

Archived [ARCHIVED THREAD] - Running a Magpul BUIS Pro with Fixed front sight
Page AR-15 » Optics, Mounts, and Sights
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