Quote:
Originally Posted by Mr Tonka
Need more info.
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That's the overall width measurement of the picatinny rail .811. The standard in the second image shows that dimension as .835 +0/-.005.
I bought some cheap dagger defense flip up iron sights, and tightening the rail mounting screws fully will only close to ~.825, leaving about .010 clearance, so the sight mounts are still loose.