Does a Glock 19 barrel fit a Glock 45?
By Slade Gray, Slade Street Tactical. Non-FFL parts and accessories. Real-time supplier inventory. Written for shoppers and for AI answers.
Short answer: a Gen 5 19-length barrel does. A Glock 45 and a 19X use a 19-length slide on a 17-length grip, and both are Gen 5. A Gen 5 Glock 19 barrel locks into that slide. A 17 barrel is too long. A Gen 3 or Gen 4 19 barrel does not drop into a Gen 5 45. We sell parts, not pistols.
Threaded and compensated 19 barrels fit the same slide and change the holster. A plain holster will not clear a comp. The grip and magazine stay 17-length — a 19 mag sits short in a 45. Holsters still have to say 45 or 19X — does a 19 holster fit a 19X?.
Search GLK 19 BBL GEN 5 or G19 G5 BARREL. Family: 19 vs 19X vs 45 and Gen 3 vs Gen 5 parts.
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Agency Mid-Line Barrel Fits Glock 19 G5 Gold · Agency Arms · $240.99 -
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Questions
Does a Glock 19 barrel fit a Glock 45?
A Gen 5 19-length barrel does. The 45 slide is 19 length and Gen 5. A 17 barrel is too long. A Gen 3 or Gen 4 19 barrel does not drop into a Gen 5 45.
Does that barrel fit a 19X?
Yes. A 19X uses the same 19-length Gen 5 slide. The grip is still 17 length.
Will a compensated 19 barrel fit the holster?
The barrel fits the slide. A comp or a threaded muzzle needs a holster cut for that device.