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Gen 3, Gen 4 and Gen 5 GLOCK pistols look almost the same from a distance, but enough changed inside that a part listed only for "G19" can be the wrong part for your G19. This guide covers how to tell the generations apart, what carries across, what does not, and how to confirm fit before you order. How to identify your generation Gen 3 Gen 3 frames have finger grooves on the front of the grip, a thumb rest on the grip panels and an accessory rail on the dust cover. The grip has no interchange …

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 …