Fits Gen 1–3 Glock 23 compatible frames. This complete Remsport bullnose upper delivers Gen 5-inspired styling on Gen 3 geometry — drops on, no gunsmithing, no fitting.
Finish is matte black nitride on both slide and barrel for corrosion resistance and reduced wear through cycling.
Features:
Lube all contact surfaces before first use and run 200 rounds of standard .40 S&W ammunition during break-in before moving to duty loads. Confirm your lower is a Gen 1–3 Glock 23 pattern — this upper will not fit Gen 4 or Gen 5 frames.
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