I recently got a BCM ltwt middy with FSP and DD A1.5 rear sight. After siting in at 50 yards, the rear sight is 13 clicks to the left, which leaves about 7 clicks left until the aperture hits the sight body. It may be slightly more or less off center and I'm not sure since the DD A1.5 rear sight doesn't have a distinct line for the center position.
The windage is fine at 100 yards. I'm not sure about 200 yards, but I can consistenly hit a 12x12 plate at about 250, so I say close enough.
I'm currently running the BCM with only irons until I can add a RDS later this month. I actually didn't notice how much offset the rear aperture was until I came across a similar thread to this one on another forum. The only potential "problem" that I can see is that once I add the RDS, the offset rear aperture may be distracting in lower 1/3 cowitness with the irons. My current setups have been absolute cowitness with flip up sights. But I'll have to wait and see when I get the RDS, but I think it'll be fine.


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