It has everything to do with your post. I have owned over 15 Acogs at one point. They all have differences, including the two you posted. He is stating fact. They are for different barrels and some for different calibers.
Get over it kid.
Maybe learn how to use your irons first instead of going to an optic when it’s not needed if you haven’t learned the ins and outs of irons. Shooting at a range with real irons is not a video game.
Get over it kid.
Maybe learn how to use your irons first instead of going to an optic when it’s not needed if you haven’t learned the ins and outs of irons. Shooting at a range with real irons is not a video game.

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