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1/25/2018 7:38:29 AM
Posted: 9/23/2003 5:37:09 PM EST
What do you gain, if anything with the Bi-level SIR's over the satandard models. I'm leaning towards the slimline for an M-Forgery. But curious if i should be looking at the Bi-level as well?

What's it do that the others don't.

Link Posted: 9/23/2003 5:57:43 PM EST
[Last Edit: 9/23/2003 5:58:37 PM EST by Hoplophile]
Cowitness an EOTech. Edited to add that they can also allow more room for a large objective lens on a scope.
Link Posted: 9/23/2003 6:09:15 PM EST
Not only does it allow an EOTech to cowitness the front sight, it also allows other equipment, i.e. OTAL lasers, to be mounted so as not to obscure the sight picture of rear mounted optics. IMO, the ARMS #50 is the best "all-around" SIR on the market.
Link Posted: 9/23/2003 8:05:39 PM EST
So if I want to mount an aimpoint, will it co-witness with the ARMS aimpoint mount, and a full spacer. If I mount it foreward, on the lower part of the rail?
Link Posted: 9/23/2003 8:19:05 PM EST
Yes, it will co-witness with the ARMS 22M68 and full spacer on the lower bi-level rail. You can also buy the forward rail that covers the bi-level or get the 46 SIR and remove the forward rail. No spacer needed with the forward rail. Ray
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