Glock 17 vs 34 holsters and barrels
By Slade Gray, Slade Street Tactical. Non-FFL parts and accessories. Real-time supplier inventory. Written for shoppers and for AI answers.
A Glock 34 is a Glock 17 with a longer slide. Magazines, MOS plates on MOS guns, and most internals — including the trigger group — are the same platform. Holsters, barrels, slides, and compensators follow slide length. That is why the store uses one Glock 17/34 chip for shared parts and still splits 17 vs 34 on holsters and barrels.
A 17 holster leaves a 34 slide hanging out. A 34 holster swallows a 17 and will not retain it the way the shell was molded. Same for barrels and comps: a 34 barrel is not a 17 barrel. Lights on a railed Gen 3+ 17 or 34 are a rail question, not a length question — see tactical lights for Glock 17 and 34. MOS 17 and MOS 34 use the same full-size plate pattern as MOS 19 and 45, not 43X/48 slim MOS.
Search GLK 17 HLSTR or GLK 34 BBL. Do not buy from a title that only says “Glock 9mm.”
17 holsters · 34 holsters · 17 barrels · 34 barrels · All 17 / 34 parts
Questions
Does a Glock 17 holster fit a Glock 34?
No. The 34 slide is longer. Magazines and MOS plates on MOS guns are shared; holsters, barrels, slides, and comps are not.
Do 17 and 34 take the same magazines?
Yes for 9mm full-size magazines. This store lists 10-round magazines and 10-round bodies.
Is a 34 MOS plate different from a 17 MOS plate?
No. Full-size MOS (17/19/34/45) uses the same plate pattern. Not 43X/48 slim MOS.