Magpul MBUS w/ fixed front?

[SpookyPistolero]

Howdy folks-

I'm going to need a rear sight for a flat top upper coming, it already has a fixed front sight. Can I use the MBUS with a fixed, or do I need to spend the extra dough to get an MI or something to work with the fixed front?

[VHinch]

Works fine, why wouldn't it? I'm currently running an MBUS rear with a fixed front on two different ARs with no complaints.

[SpookyPistolero]

Just wanted to check! Couldn't find anything using the search, but I thought I'd recalled someone saying you couldn't for some reason.

I'm gonna give it a whirl then, thanks!

[SPM14430]

Another option is the Matech BUIS, offers both adjustment and windage and is US issue. The price is right, between $40 -50 shipped.

[jsebens]

The only problem with the Matech (and my experience with it is limited to one 18 month deployment) is that after a while, it won't stay down...at which point you start wondering why it's billed as a "flip-up" anyway.

[ST911]

The only problem with the Matech (and my experience with it is limited to one 18 month deployment) is that after a while, it won't stay down...at which point you start wondering why it's billed as a "flip-up" anyway.

Easy fix: Peen the ledge and restore the intrusion (L side) that engages the upright.

[jsebens]

Easy fix: Peen the ledge and restore the intrusion (L side) that engages the upright.

Which is totally valid if you have the tools/capabilities to do that. Definitely not a barracks fix.

[TehLlama]

I run MBUS rear behind DD Fixed front sights exclusively, and my wife runs MBUS rear behind F front sights.

My 600m Matech works great backing up my MR/T, but for affordably mounting and retaining a solid 50/200yd zero, the MBUS works just as well.

[Hat Creek]

Which is totally valid if you have the tools/capabilities to do that. Definitely not a barracks fix.

Agreed! Totally valid given a ham handed effort by the lowest common denominator. In some cases policy or standing order is needed to insure the non-dedicated personnel do not touch this sight. Optimum choice here would be a fixed BUIS and avoid the folding units for issue.