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1/25/2018 7:38:29 AM
Posted: 2/6/2006 8:26:32 PM EST
I *KNOW* I remember reading about the M4 front site base being a different height than the rest of the ARs. SOOOOOOOO does this also apply BUIS like there'd be a certain one you could and alot that you couldn't use?

yet again maybe a dumb question... Hell my NSN has backups on it as is but i'm just wondering
Link Posted: 2/6/2006 8:27:59 PM EST
buis are all the same height .

and the nsn buis is worthless.
Link Posted: 2/6/2006 8:29:15 PM EST
yea i pretty much realized that seocnd part
Link Posted: 2/7/2006 5:52:39 AM EST
[Last Edit: 2/7/2006 5:53:15 AM EST by Onslaught]
ARMS #40 is designed for the "F" front sight post, so it is slightly taller than some others. Some people have to resort to a .040" taller front sight post when using the #40 without the "F" FSB.

I have personally noticed slight height differences between different BUIS, with the DPMS fixed detachable being very low compared to a Bushmaster chopped carry handle, and the ARMS #40A being slightly taller than both.

I think the VERY few issues regarding a BUIS is with folks who have the LOWER FRONT. You should be fine regardless.


Originally Posted By Snaps:
I *KNOW* I remember reading about the M4 front site base being a different height than the rest of the ARs. SOOOOOOOO does this also apply BUIS like there'd be a certain one you could and alot that you couldn't use?

yet again maybe a dumb question... Hell my NSN has backups on it as is but i'm just wondering

Link Posted: 2/7/2006 11:38:18 AM EST
Keep in mind- there are TWO different heights of carry handles.
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