Setting up a Co witness system

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HoosierDaddy	Setting up a Co witness system	Lead	[-]
Posts: 5570 (11/15/09 07:17 AM) Forum Site Moderator Reply Quote More My Recent Posts	Tags : None Ok I have an EOTech 512. Yesterday I put it on my CMMG Bargain basement AR. When I put the Eotech all the way forward the rear BUIS is too close and I can't operate the controls. I took the BUIS off and tried to set the Eotech. When I get the eotech adjusted the front sight is in the way. I can't see the target as the display is centered on the front sight base. I then put it on my SIG 556 SWAT. Same thing the display is aiming at the front sight base. Help!!!! Ash Iron Construction
WVchuck		#1	[-]
Posts: 12674 (11/15/09 04:07 PM) Forum Site Moderator Reply Quote More My Recent Posts	HD, I'm experiencing the same issues with the scope mount and flip up sight on the AR flat top here, not enough room for both on the rail. So I just dropped the allen wrench in the buttstock cleaning/tool kit and finger tightened the UTG sight to the side rail to install should I have to remove the optics/mount and go to open sights.
Bryan 45		#2	[-]
Posts: 2603 (11/15/09 08:13 PM) Host Reply Quote More My Recent Posts	Sorry, I can't help here, HD. I've never used the Eotech.
ThePitbullofLove		#3	[-]
Posts: 6717 (11/15/09 09:42 PM) Forum Site Moderator Reply Quote More My Recent Posts	What rear sight are you using? Here's my CMMG with MATECH DPMS w/ CMMG upper & Magpul MBUS I sighted my BUIS in first. Then I put the EoTech on, dropped the red dot on the top of the sight post, and surprise. It was on paper. Slight adjustment, and we have a winner...all in the black. Life is the crummiest book I ever read, there isn't a hook; Just a lot of cheap shots, pictures to shock, and characters an amateur would never dream up...
WVchuck		#4	[-]
Posts: 12683 (11/16/09 05:38 PM) Forum Site Moderator Reply Quote More My Recent Posts	I want a magpull BUIS. I know where there is one locally and may go pick it up over the Thanksgiving break.
HoosierDaddy		#5	[-]
Posts: 5572 (11/16/09 06:06 PM) Forum Site Moderator Reply Quote More My Recent Posts	The rear sight is a UTG. I can see from the pictures that it is a lot thicker at the front base than yours. Ash Iron Construction
usrifle		#6	[-]
Posts: 2547 (11/20/09 11:57 AM) Veteran member Reply Quote More My Recent Posts	I have an Eotech 552 on my M4 with front and rear GG&G BUIS with no problems. Is the sheer size of the UTG the problem? Do you have a front BUIS?....or a standard "triangle" front? If it's a standard front sight there is no working around that, you need a new gasblock and a folding front sight. usrifle
HoosierDaddy		#7	[-]
Posts: 5583 (11/20/09 05:25 PM) Forum Site Moderator Reply Quote More My Recent Posts	I have a standard triangle front sight. The size of the UTG is the problem. It's profile at the front covers the buttons on the EOTech. So can you set up a Co Witness system using the triangle front sight? Ash Iron Construction
WVchuck		#8	[-]
Posts: 12702 (11/20/09 07:46 PM) Forum Site Moderator Reply Quote More My Recent Posts	The UTG is a large and for the most part clunky clamp on rear sight. I'm going to hint around that I want a Magpul BUIS for Christmas.
ThePitbullofLove		#9	[-]
Posts: 6723 (11/20/09 09:00 PM) Forum Site Moderator Reply Quote More My Recent Posts	HoosierDaddy wrote: I have a standard triangle front sight. The size of the UTG is the problem. It's profile at the front covers the buttons on the EOTech. So can you set up a Co Witness system using the triangle front sight? Oh, yes. I'm totally co-witnessed with my Matech and the EoTech with the stock F-marked FSB. I've also co-witnessed with the EoTech, Magpul BUS, and stock F-marked FSB. No issues with either. Little red dot sitting on top of the sight post; red Donut of Doom™ filling the rear aperture. Perfect co-witness. Life is the crummiest book I ever read, there isn't a hook; Just a lot of cheap shots, pictures to shock, and characters an amateur would never dream up... Last Edited By: ThePitbullofLove 11/20/09 09:04 PM. Edited 1 times.
usrifle		#10	[-]
Posts: 2548 (11/22/09 10:37 AM) Veteran member Reply Quote More My Recent Posts	Thanks Pitbull, it was my understanding the factory "triangle" front sight caused issues with co-witnessing sights... Thanks for clearing that up. usrifle
A square 10		#11	[-]
Posts: 794 (11/28/09 11:15 PM) Veteran member Reply Quote More My Recent Posts	you should be able to get it in a lower third cowitness if the sights are bothering you , ive got mine mounted on a larue base with quick detach , it works great , http://steyrmannlicher.yuku.com/directory "the original yesterdays weapons"