Optic footprint mismatches drive more red-dot returns than any other slide question. The cut on your slide and the bolt pattern on your optic have to match — and the terminology is confusing because "RMR cut," "RMSc cut," and "Holosun K" refer to bolt patterns that are not interchangeable. This guide maps each footprint to the Glock platforms 3CR cuts slides for, explains …
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You finished swapping slides on your Glock, racked it, and the slide stopped a hair short of fully closing. Or worse — it closes under recoil at the range and hangs up on the next round. The pistol isn’t “broken.” Almost every out-of-battery issue after an aftermarket slide swap comes down to one of five causes, and none of them require gunsmithing to di …
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