Excellent sight - Primary Arms SLx Series 2.5 x 32 mm Red Dot Sight

Excellent sight. Plenty of info on bullet drop (BDC) and lead markings. Being an etched sight, there is no flare as in a red dot. The markings are clear and easy to use. Night illumination is as needed, but manual control. Since this sight is magnified, co-sighting is not possible, so a QDC mount or offset BUIS is required. Would be nice if a QDC came standard. Frankly, if this sight were unusable you might as well remove it and go to BUIS.

Somewhere I read this sight would also BDC work with .300 BLK, but I am unsure as they make specific version for that. Would be nice to have full interchangeability across 5.56mm and .300 BLK.