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 XPS + EOtech 3x Magnifier on AR with BUIS?
Burnsy87  [Team Member]
10/13/2009 12:46:47 AM
Just floating some ideas around at the moment, not looking to get an optic for some time, want to be completely comfortable with the back-up sights. I have an M&P15, and I was wondering with the smaller EOTech XPS's, would it be possible to use their 3x magnifier and still have the rear flip-up sight usable if necessary? With the other EOTechs, they are too long, and it wouldn't be possible, but the XPS's are much shorter, so I was just wondering if it was possible.

Thanks
The_Distance  [Team Member]
10/13/2009 1:16:29 AM
I have an EoTech 556 with a 3x Magnifier on my Rock River Arms Ar15; works well. Need a flip mount. Pictures later.
glockster234  [Member]
10/13/2009 2:37:43 AM
I have an EOTech XPS with an EOTech magnifier. If you want a rear BUIS, you need a flip mount on the magnifier.
The requirement for the flip mount has nothing to do with the length of the XPS or any other EOTech.
The requirement is due to the eye relief from the magnifier, which requires the eye end of the magnifier be mounted
over the BUIS location. EOTech claims eye relief at just under 2", which seems right to me.

BTW, my GG&G flip up rear BUIS does not work as the GG&G sticks up too high.
I'm told I need a Troy BUIS.

There's discussion on this topic and photos of the XPS/magnifier setup here:
http://www.ar15.com/forums/topic.html?b=3&f=18&t=462172
Narc45ACP  [Team Member]
10/13/2009 6:23:17 AM
Eotech XPS + Eotech G23 3X Magnifier + Troy folding BUIS or Eotech 516 (shorter than the 512, built in 7 mm riser) + Eotech G23 3X Magnifier (with included 7 mm riser) + Troy folding BUIS. Both will fit on your rail. I have the latter set-up:





50-140  [Team Member]
10/13/2009 7:54:29 AM
512, 3X magnifier with FTS mount, Matech buis;
I've since removed the EoTech mount, and have it directly on the upper, more in line with the magnifier.

Burnsy87  [Team Member]
10/13/2009 10:04:48 AM
Oh, sweet, thanks. I did some measuring last night, and my Magpul MBUS have less than an inch of height, and the EOTech website said that the magnifier's mount was like 1.6" tall, so should it clear it? The site doesn't look to be much bigger than 50-140's.
Narc45ACP  [Team Member]
10/13/2009 9:27:13 PM
Originally Posted By Burnsy87:
Oh, sweet, thanks. I did some measuring last night, and my Magpul MBUS have less than an inch of height, and the EOTech website said that the magnifier's mount was like 1.6" tall, so should it clear it? The site doesn't look to be much bigger than 50-140's.


It should clear the MBUS, especially if you use the 7 mm riser on the samson mount.
Burnsy87  [Team Member]
10/13/2009 10:25:09 PM
Originally Posted By Narc45ACP:
Originally Posted By Burnsy87:
Oh, sweet, thanks. I did some measuring last night, and my Magpul MBUS have less than an inch of height, and the EOTech website said that the magnifier's mount was like 1.6" tall, so should it clear it? The site doesn't look to be much bigger than 50-140's.


It should clear the MBUS, especially if you use the 7 mm riser on the samson mount.


Ok, thank you all very much.

Now I just need to get all the money I'm allotting myself to spend on firearms stuff that I can!

Stupid college taking all my money.