Buis question

Buis question

This is a discussion on Buis question within the Defensive Rifles & Shotgun Discussion forums, part of the Related Topics category; I have a question that might be a bit weird but will a decent AR sight (eg. Magpul BUIS) hold its zero if you take ...

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  1. #1
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    Buis question

    I have a question that might be a bit weird but will a decent AR sight (eg. Magpul BUIS) hold its zero if you take it off and put it back on?
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    May not hold absolute zero , but it should be close. It will depend on tolerances on mounting it I would imagine.
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    My Magpul BUIS's have held zero after removal and re-installation several times.

    As Rocky said though mounting tolerances and also what you consider "zero" . My zero with backup's is a paper plate at 100yds

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    If everything is well made and you return it to the same place... its supposed to.

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    If you put it in the exact same spot on the rail then it should keep zero. My scopes and EOTech even keep zero after taking them off and putting back on.
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    Good to hear. I'm considering putting a sight on the front and storing the rear (after being zeroed ) in the grip...
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    You should be good, specially with aluminum or steel made sights. Just make sure no one tampers with the buis while they're off the stick.
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    Quote Originally Posted by Phaedrus View Post
    Good to hear. I'm considering putting a sight on the front and storing the rear (after being zeroed ) in the grip...
    Be sure to pack the rear buis while in the grip so it is immobilized. Also, it may be worthwhile to put a mark on the rail so it can be remounted in the same, exact position.
    My buis and optics all hold zero 'if' mounted in the exact position as they were removed from to within 3 MOA.
    However, I never fully trust any of them until I put a few test rounds through after remounting, but they have been staying within the 3 MOA range.
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    Should hold a zero to get you out of trouble, a better option is to use your eye as a rear sight
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    Yeah, just a front sight would work at handgun distances. I'm just examining my options.
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    VIP Member Array Nmuskier's Avatar
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    What's the advantage of keeping a rear sight in the grip? Why not fold it down? The grip is a good place for spare red dot batteries.
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    Quote Originally Posted by Nmuskier View Post
    What's the advantage of keeping a rear sight in the grip? Why not fold it down? The grip is a good place for spare red dot batteries.
    I'm just in the thought experiment stage now. The BUIS takes several rail spaces and I prefer to mount the RDS as far rearward as I can, close to my eye.
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    VIP Member Array DingBat's Avatar
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    Quote Originally Posted by Phaedrus View Post
    I'm just in the thought experiment stage now. The BUIS takes several rail spaces and I prefer to mount the RDS as far rearward as I can, close to my eye.
    have you shot a lot of RDS sights? I had the same thought when I installed my Tritium Meprolight on my TAVOR. I wanted it close. I've shot scoped rifles since I was a kid, and it made sense. The few times I shot freinds' guns with an RDS I found myself wwishing I could get closer. Then I got my own on my own gun (finally) and after shooting a lot I realized that by moving the RDS further down it allows a much greater field of peripheral vision, w/out hurting target acquisition or field of view thru the optic. a win/win. I've seen guys (especially Ausiie's ??) mount an RDS clear at the far end in place of the front site, this seems extreme, but my point is you may find that having that RDS right in your face is not the best bet you may think it is.

    but only you will be able to determine that given time.
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    I still find it uncanny how close the ACOG is when you remove it and reinstall it. That said, I think it has something to do with how well your rails are machined. Mine goes off and on Wilson rails, and before I saw how "on" it was with just thumb screws I might have said that getting high quality rails was a conceit. At this point I think there is something to it.
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    VIP Member Array Nmuskier's Avatar
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    ^^^
    Yup. Put the red dot as far forward on the upper receiver as the mount will allow.
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