Glock 17 vs 34 Size Comparison
The Glock 34 is 0.79 in (20 mm) longer, the same height and the same width than the Glock 17. With an empty magazine it weighs 2.22 oz (63 g) more. Both drawn to scale from Glock's published dimensions.
Glock 17 vs 34 side by side
Glock A
Glock B
Side profile
From behind
- Slide width
- 1 in1 in
- Same
- Overall width, with controls
- 1.34 in1.34 in
- Same
Tap the drawing to flip between the Glock 17, the Glock 34 and both.
Photos: Glock 17 Gen5 photo by Tony Webster, cut out by LeoPavouk (CC BY 2.0); Glock 43X photo by Kolomaznik (CC BY 4.0); Glock 17 Gen4 photo by Steve Dock, UK Ministry of Defence (OGL v1.0) Contains public sector information licensed under the Open Government Licence v1.0. Cut out and reshaped to each model's published size by GunPartPicker.
Plan your Glock in the Glock builder: slide, barrel, trigger and sights, each checked for fit. Open the Glock builder →
Quick answer
The Glock 34 is 0.79 in (20 mm) longer, the same height and the same width than the Glock 17. With an empty magazine it weighs 2.22 oz (63 g) more.
- Glock 17: 7.95 in long, 5.47 in tall, 1.34 in wide, 4.49 in barrel. Glock 34: 8.74 in long, 5.47 in tall, 1.34 in wide, 5.31 in barrel.
One square is one inch. Real Glock photos sized to Glock's published dimensions, checked September 27, 2026.
Is the Glock 17 or 34 bigger?
The Glock 34 is the bigger pistol. Against the Glock 17 it is 0.79 in (20 mm) longer.
Glock 17 vs 34 dimensions
| Dimension | Glock 17 | Glock 34 | B vs A |
|---|---|---|---|
| Overall length | 7.95 in202 mm | 8.74 in222 mm | +0.79 in20 mm |
| Slide length | 7.32 in186 mm | 8.15 in207 mm | +0.83 in21 mm |
| Barrel length | 4.49 in114 mm | 5.31 in135 mm | +0.82 in21 mm |
| Height with magazine | 5.47 in139 mm | 5.47 in139 mm | Same |
| Overall width, with controls | 1.34 in34 mm | 1.34 in34 mm | Same |
| Slide width | 1 in25 mm | 1 in25 mm | Same |
| Trigger reach | 2.68 in68 mm | 2.76 in70 mm | +0.08 in2 mm |
| Weight, empty magazine | 23.99 oz680 g | 26.21 oz743 g | +2.22 oz63 g |
| Capacity, standard magazine | 17 rounds | 17 rounds | Same |
| Caliber | 9mm | 9mm | Same |
| Glock catalog | Current model | Law enforcement catalog; retail stock still sells |
Glock 17 vs 34 grip length
The Glock 17 and Glock 34 are the same height with a magazine in, 5.47 in (139 mm). Trigger reach, from the back of the grip to the trigger, is 2.76 in on the Glock 34 against 2.68 in on the Glock 17.
Glock 17 vs 34 barrel and slide length
The Glock 34 barrel is 0.82 in (21 mm) longer: 5.31 in against 4.49 in. Its slide is 0.83 in (21 mm) longer (8.15 in against 7.32 in).
Will a Glock 34 fit a Glock 17 holster?
Only in an open bottom holster. The Glock 34 slide is 0.83 in (21 mm) longer, so it will not seat in a closed end Glock 17 holster. Holster makers mold for exact models, so check the maker's fit list before you buy.
Is the Glock 34 compact or subcompact?
Glock puts the Glock 34 in its competition class and the Glock 17 in its full size class. Here is every current Glock at the same scale.
Subcompact slimline
Subcompact
Compact
Full size
Every card is to the same scale, lined up at the slide rear. Tap one to compare it or look at it alone.
Where can I buy a Glock 17 or 34 today?
Glock 17 in stock
In stock now. One listing per model family.
Glock 34 in stock
No Glock 34 in stock at the stores we track today.
More Glock 17 and 34 comparisons
Frequently Asked Questions
How much smaller is the Glock 17 than the Glock 34?
0.79 in (20 mm) shorter, 0 in (0 mm) lower and 0 in (0 mm) narrower, by Glock's published dimensions.
Which is lighter, the Glock 17 or the Glock 34?
The Glock 17, by 2.22 oz (63 g) with an empty magazine: 23.99 oz (680 g) against 26.21 oz (743 g) for the Glock 34.
Which holds more rounds, the Glock 17 or the Glock 34?
Neither: both ship with a 17 round standard magazine.
Where do these Glock 17 and Glock 34 numbers come from?
From Glock's own US spec pages, checked September 27, 2026. Both guns are shown at one scale, as real Glock photos reshaped to those numbers.
Cite this tool: GunPartPicker, “Glock 17 vs 34 Size Comparison”, https://gunpartpicker.net/tools/glock-size-comparison/glock-17-vs-34. Data from the GunPartPicker catalog and real community builds, prices checked November 11, 2026. Free to cite with attribution.
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