Fits Glock 19 Gen 1, Gen 2, and Gen 3 OEM frames plus Polymer80 PF940C and GST-9 builds. Not compatible with Gen 4 or Gen 5 frames — the rail geometry and recoil layout changed. This is a stripped slide; a 9mm barrel and slide-completion kit are sold separately.
Finish is hard Black DLC (Diamond-Like Carbon) bonded to 416 stainless steel — harder than nitride, more scratch-resistant than Cerakote, and doesn't lift under repeated holster draws. The RMR optic cut accepts Trijicon RMR / RM06 red dots directly; the steel cover plate ships installed for iron-sight-only use.
Completion kit pairing: pairs with the 3CR Tactical Slide Completion Kit for Glock 19/23 Gen 3-4 (SKU 3CR-GLK19-SLD-KIT — firing pin, extractor, plunger, spring, and cover plate). Barrel pairing: the 3CR 9mm drop-in barrel (SKU GLK-19-RPL) or threaded 1/2x28 variant (GLK-19-THD) both drop straight in. Break-in: cycle 20–50 rounds after full assembly to confirm reset and extraction before defensive carry.
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