Slide cut and optic footprint are not the same thing — and getting them mixed up is the single biggest mistake we see at checkout. A footprint is the mounting pattern on the bottom of an optic. A slide cut is the milled recess on top of the slide that has to match it. If the screw holes and recoil lugs don't line up, the optic doesn't sit flat, and nothing you torque it t …
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The forum answer is always "bigger dot = faster sight picture, smaller dot = more precise." That's not wrong, but it's not the whole answer. Pistol red dot dot size — measured in MOA, where 1 MOA covers roughly 1 inch at 100 yards — has to match the distance you actually shoot at, the size of the target you're trying to hit, and how much eye strain you can tolerate …
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The Glock 43X and Glock 48 MOS pistols only accept RMSc-footprint optics, which makes the optic-selection problem narrower and cleaner than full-size Glock work. This isn't a 50-option category like the Glock 17 or Glock 19 lineup — the right pick comes down to glass quality, dot crispness, whether the emitter is open or enclosed, and whether you want a circle-dot reticle …
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