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The GLOCK 43, 43X and 48 are all 9mm "Slimline" pistols, and they share more parts than most owners expect. They are not identical, though. A few frame-side parts changed when GLOCK widened the grip for the 43X and 48, and those are the parts that cause most ordering mistakes. This guide covers what is the same, what is different, and how to confirm fit before you buy. The three pistols at a glance GLOCK's published specifications show where the models line up and where they split: G43: 6-roun …