I've been feeling a little impatient waiting on the transfer for my SLR104UR SBR to go through so I decided to jump into CAD and see what type of improvements I could possibly make to the rear sights.
This is what I came up with, the measurements are all correct and I think I got pretty much all of the details right. Let me know what you think:
A few notes:
I did widen the original leaf sight from 1 mm to 1.8mm and rounded the edges, other than that its pretty much an exact copy of the original. The "4-5" sight has been replaced with a 5mm (.197") diameter ghost ring sight. The very center of the ghost ring is at the exact point where the FSP would rest in the leaf sight, so theoretically they should be the same zero. I may have this sent off to a CNC and see how it works. The only measurement I'm not 100% on is the roll pin hole, I currently have it at 2.4mm however my calipers didn't fit as well as I had hoped. If anyone has a rear sight and roll pin laying around, I could really use a second check on it.
The only con I see from this design is that the very top of the ghost ring sight will probably peak above the protective wings on the dust cover.
If you have any ideas/advice/comments feel free speak up!