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Second version of my hotshoe adapter, released by popular demand. Note that this adapter is made for the pictured type of reflector sight, and other models may or may not fit, most red dots for Weaver rails do.
The adapter sits pretty tight inside a standard hot shoe, so use a bit of gentle pressure to insert it the first few times. Usually the hotshoe rubs off a bit of the material, so it sits more loosely later.
This adapter is indented for tele lens use, the reflector sight might not be tilt enough to use this for macro shooting.
Version 2 increased the width of the hot shoe to provide a better fit with smaller prints. Bigger prints consequently might need a bit of sanding down the sides of the hotshoe adapter edge to fit.