Glock 45 vs 48 Size Comparison
The Glock 48 is 0.16 in (4 mm) shorter, 0.43 in (11 mm) lower and 0.25 in (6 mm) narrower than the Glock 45. With an empty magazine it weighs 2.36 oz (67 g) less. It holds 10 rounds in a standard magazine to the 45's 17. Both drawn to scale from Glock's published dimensions.
Glock 45 vs 48 side by side
Glock A
Glock B
Side profile
From behind
- Slide width
- 1 in0.87 in
- Glock 48 is 0.13 in (3 mm) narrower
- Overall width, with controls
- 1.35 in1.1 in
- Glock 48 is 0.25 in (6 mm) narrower
Tap the drawing to flip between the Glock 45, the Glock 48 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.
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Quick answer
The Glock 48 is 0.16 in (4 mm) shorter, 0.43 in (11 mm) lower and 0.25 in (6 mm) narrower than the Glock 45. With an empty magazine it weighs 2.36 oz (67 g) less. It holds 10 rounds in a standard magazine to the 45's 17.
- Glock 45: 7.44 in long, 5.47 in tall, 1.35 in wide, 4.02 in barrel. Glock 48: 7.28 in long, 5.04 in tall, 1.1 in wide, 4.17 in barrel.
One square is one inch. Real Glock photos sized to Glock's published dimensions, checked September 27, 2026.
Is the Glock 45 or 48 bigger?
The Glock 45 is the bigger pistol. Against the Glock 48 it is 0.16 in (4 mm) longer, 0.43 in (11 mm) taller and 0.25 in (6 mm) wider.
Glock 45 vs 48 dimensions
| Dimension | Glock 45 | Glock 48 | B vs A |
|---|---|---|---|
| Overall length | 7.44 in189 mm | 7.28 in185 mm | −0.16 in4 mm |
| Slide length | 6.85 in174 mm | 6.85 in174 mm | Same |
| Barrel length | 4.02 in102 mm | 4.17 in106 mm | +0.15 in4 mm |
| Height with magazine | 5.47 in139 mm | 5.04 in128 mm | −0.43 in11 mm |
| Overall width, with controls | 1.35 in34 mm | 1.1 in28 mm | −0.25 in6 mm |
| Slide width | 1 in25 mm | 0.87 in22 mm | −0.13 in3 mm |
| Trigger reach | 2.68 in68 mm | 2.64 in67 mm | −0.04 in1 mm |
| Weight, empty magazine | 23.1 oz655 g | 20.74 oz588 g | −2.36 oz67 g |
| Capacity, standard magazine | 17 rounds | 10 rounds | −7 |
| Caliber | 9mm | 9mm | Same |
| Glock catalog | Current model | Current model |
Glock 45 vs 48 grip length
The Glock 48 stands 0.43 in (11 mm) lower than the Glock 45 with a magazine in (5.04 in against 5.47 in). Trigger reach, from the back of the grip to the trigger, is 2.64 in on the Glock 48 against 2.68 in on the Glock 45. The two frames are different families (double stack and slimline single stack), so the height gap is overall height, not only grip length.
Glock 45 vs 48 barrel and slide length
The Glock 48 barrel is 0.15 in (4 mm) longer: 4.17 in against 4.02 in. The slides are the same length, 6.85 in (174 mm).
Will a Glock 48 fit a Glock 45 holster?
Usually not. The Glock 48 is a slimline single stack frame and a Glock 45 holster is molded around a double stack frame, so the fit and retention will be wrong. Holster makers mold for exact models, so check the maker's fit list before you buy.
Is the Glock 48 compact or subcompact?
Glock puts the Glock 48 in its subcompact slimline class and the Glock 45 in its crossover 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 45 or 48 today?
Glock 45 in stock
In stock now. One listing per model family.
Glock 48 in stock
In stock now. One listing per model family.
More Glock 45 and 48 comparisons
Frequently Asked Questions
How much smaller is the Glock 48 than the Glock 45?
0.16 in (4 mm) shorter, 0.43 in (11 mm) lower and 0.25 in (6 mm) narrower, by Glock's published dimensions.
Which is lighter, the Glock 45 or the Glock 48?
The Glock 48, by 2.36 oz (67 g) with an empty magazine: 20.74 oz (588 g) against 23.1 oz (655 g) for the Glock 45.
Which holds more rounds, the Glock 45 or the Glock 48?
The Glock 45: 17 rounds in a standard magazine against 10 for the Glock 48, as Glock's spec pages list them.
Where do these Glock 45 and Glock 48 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 45 vs 48 Size Comparison”, https://gunpartpicker.net/tools/glock-size-comparison/glock-45-vs-48. Data from the GunPartPicker catalog and real community builds, prices checked November 11, 2026. Free to cite with attribution.
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