Which trigger kits fit your Glock?
A trigger kit replaces the trigger and the parts around it inside the frame, so it has to match the frame generation. The same kits fit the Glock 17, 19 and 26.
The Short Answer
- Gen3 and Gen4 frames take the same trigger kits, and so do Gen3-pattern aftermarket frames like the Lone Wolf Timberwolf.
- Gen5 frames need Gen5 kits. A Gen3/4 trigger kit won't fit a Gen5, or the other way round.
- One kit fits the G17, G19 and G26 of the same generation.
- The slide parts kit follows the slide the same way: Gen3/4 parts for Gen3 and Gen4 slides, Gen5 parts for Gen5 slides.
Frame and Trigger Kit
Each Glock 19 frame we list, checked against every trigger and frame parts kit.
Glock G19 Gen3 Frame (OEM, stripped)
- Fits Glock OEM Lower Parts Kit, Gen3/4 · ZEV PRO Curved Trigger Kit + LPK, Gen3/4 · Apex Action Enhancement Trigger + LPK, Gen3/4 · Timney Alpha Competition Trigger + LPK, Gen3/4
- Won't fit Glock OEM Lower Parts Kit, Gen5 · Apex Action Enhancement Trigger + LPK, Gen5 A Gen3/4 frame needs Gen3/4 trigger and frame parts.
Lone Wolf Timberwolf G19 Frame
- Fits Glock OEM Lower Parts Kit, Gen3/4 · ZEV PRO Curved Trigger Kit + LPK, Gen3/4 · Apex Action Enhancement Trigger + LPK, Gen3/4 · Timney Alpha Competition Trigger + LPK, Gen3/4
- Won't fit Glock OEM Lower Parts Kit, Gen5 · Apex Action Enhancement Trigger + LPK, Gen5 A Gen3/4 frame needs Gen3/4 trigger and frame parts.
Glock G19 Gen4 Frame (OEM, stripped)
- Fits Glock OEM Lower Parts Kit, Gen3/4 · ZEV PRO Curved Trigger Kit + LPK, Gen3/4 · Apex Action Enhancement Trigger + LPK, Gen3/4 · Timney Alpha Competition Trigger + LPK, Gen3/4
- Won't fit Glock OEM Lower Parts Kit, Gen5 · Apex Action Enhancement Trigger + LPK, Gen5 A Gen3/4 frame needs Gen3/4 trigger and frame parts.
Glock G19 Gen5 Frame (OEM, stripped)
- Fits Glock OEM Lower Parts Kit, Gen5 · Apex Action Enhancement Trigger + LPK, Gen5
- Won't fit Glock OEM Lower Parts Kit, Gen3/4 · ZEV PRO Curved Trigger Kit + LPK, Gen3/4 · Apex Action Enhancement Trigger + LPK, Gen3/4 · Timney Alpha Competition Trigger + LPK, Gen3/4 A Gen5 frame needs Gen5 trigger and frame parts.
Slide and Slide Parts Kit
Each slide, checked against every slide parts kit.
Glock G19 Gen3 Slide (OEM, stripped)
- Fits Lone Wolf Upper Parts Kit, Gen3/4 · Glock OEM Slide Parts Kit, Gen3/4
- Won't fit Glock OEM Slide Parts Kit, Gen5 A Gen3/4 slide needs a Gen3/4 slide parts kit.
Brownells G19 Slide, RMR Cut, Iron Sight Window
- Fits Lone Wolf Upper Parts Kit, Gen3/4 · Glock OEM Slide Parts Kit, Gen3/4
- Won't fit Glock OEM Slide Parts Kit, Gen5 A Gen3/4 slide needs a Gen3/4 slide parts kit.
ZEV Z19 Octane Slide, RMR Cut
- Fits Lone Wolf Upper Parts Kit, Gen3/4 · Glock OEM Slide Parts Kit, Gen3/4
- Won't fit Glock OEM Slide Parts Kit, Gen5 A Gen3/4 slide needs a Gen3/4 slide parts kit.
Glock G19 Gen5 MOS Slide (OEM, stripped)
- Fits Glock OEM Slide Parts Kit, Gen5
- Won't fit Lone Wolf Upper Parts Kit, Gen3/4 · Glock OEM Slide Parts Kit, Gen3/4 A Gen5 slide needs a Gen5 slide parts kit.
Glock G19 Gen4 Slide (OEM, stripped)
- Fits Lone Wolf Upper Parts Kit, Gen3/4 · Glock OEM Slide Parts Kit, Gen3/4
- Won't fit Glock OEM Slide Parts Kit, Gen5 A Gen3/4 slide needs a Gen3/4 slide parts kit.
Glock G19 Gen5 Slide (OEM, stripped)
- Fits Glock OEM Slide Parts Kit, Gen5
- Won't fit Lone Wolf Upper Parts Kit, Gen3/4 · Glock OEM Slide Parts Kit, Gen3/4 A Gen5 slide needs a Gen5 slide parts kit.
Grey Ghost Precision G19 Combat Slide, RMR Cut
- Fits Lone Wolf Upper Parts Kit, Gen3/4 · Glock OEM Slide Parts Kit, Gen3/4
- Won't fit Glock OEM Slide Parts Kit, Gen5 A Gen3/4 slide needs a Gen3/4 slide parts kit.
Parts Worth a Look
Our picks from the Glock 19 catalog, with the lowest price we list (prices last checked Oct 4, 2026).
Trigger & Frame Parts
Budget Pick
Glock OEM Lower Parts Kit, Gen3/4
Gen3/4 · Stock trigger · ~5.5 lb
Factory parts, factory reliability.
$89.99 at GlockStore (sample price)
Best Value
ZEV PRO Curved Trigger Kit + LPK, Gen3/4
Gen3/4 · Curved face · ~4.5 lb
Shorter reset and crisper break than stock, drop-in.
$174.99 at GlockStore (sample price)
Premium Pick
Apex Action Enhancement Trigger + LPK, Gen5
Gen5 · Flat face · ~4.5 lb
The most-recommended Gen5 trigger upgrade.
$214.99 at Brownells (sample price)
Start from a Complete Build
Every part already checked to fit. Open one in the builder and swap anything you like.
Sources
Updated Oct 5, 2026.