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1/9/2014 6:57:27 AM EDT
I scored a used M4 with Bobro mount in the EE a while back.  Previously, I have previously used only LaRue (other than factory Aimpoint)  mounts, and I like both.

the BoBro is nice, but I'd like to increase height from absolute to lower 1/3 co-witness.  It seems like I could just replace the spacer, however the mount no longer shows up on Bobro's website, and they haven't responded to my inquiries.
ADM
I've also searched for an Aimpoint M4 spacer, with no luck, other than an ADM product, that appears to have been designed to work only with their own M4 mounts.

As I mentioned, I've been happy with all Larue products I've owned, and I know that I can buy a LaRue mount in either absolute or lower 1/3.

Does anyone know if anything that might work with the Bobro mount that I own?
1/9/2014 1:08:08 PM EDT
[#1]
It's my understanding the Bobro uses factory Aimpoint spacers.

Bobro recently listed the Comp M4 mount on a product list on their FB page, so apparently they're still making it. Might try calling them if they aren't responding to emails.
1/9/2014 7:46:31 PM EDT
[#2]
Let me know if you want to sell it, I'm looking for 2 of these Bobro mounts.
1/9/2014 7:54:32 PM EDT
[#3]
Use the factory spacer and screws
1/10/2014 2:43:10 AM EDT
[#4]
Maybe I'm mistaken, but I thought the factory M4 mount was also absolute co witness?
1/10/2014 4:13:43 AM EDT
[#5]
Sell the Bobro and get Larue. I got my first bobro and not a fan of how the base is separate from the arm, creating another possible movement point with bolts that can loosen. Larue's base and arm are machined from single piece. Also the Larue has matching mounts for magnifiers.
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