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full-size handgun

Glock G31

Glock · Gen 4

Glock lists the G31 Gen4 as a Standard .357 SIG Safe Action pistol with a 15-round standard magazine and a modular back strap system. The directory normalizes its frame class as full-size.

Scope note: Records the most recent generation Glock lists (Gen4 — there is no Gen5 G31); the unlabeled G31 page remains a separate listing.
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The scoped record left open whether that unlabeled page might be the current one: it is not. Its title, heading and header chips carry no generation at all, while the Gen4 page states Gen4 in all three, and the owner's manual (p. 52) lists G31 and G31 Gen4 as separate columns with different overall lengths (204 mm vs 202 mm). Chambering: the product page's caliber row reads only ".357", while the same page's overview and the manual both name the cartridge 357 SIG; the directory records .357 SIG. Glock publishes no launch release for the G31 Gen4 — all 33 live releases and the archived set were checked on 2026-08-12, and the only archived Gen4 launch release covers the G26, G27 and G35 — so year introduced is unrecorded. The manual's spec table matches the product page on every dimension.

Reference fields

ManufacturerGlock[1]
Firearm categoryHandgun[1]
Manufacturer chambering.357[1]
GenerationGen 4[1]
Manufacturer size classStandard[1]
Manufacturer listingListed on Glock US[1]
Slide finishNot yet verified
ControlsModular back strap system; reversible magazine catch[1]
WarrantyOne year from original purchase by the initial consumer; regional terms apply[3]
MSRPNot recorded
Verification boundary: Published technical data are rounded, may not reflect manufacturing tolerances, and may change without notice. MSRP is not recorded: most cited product pages do publish a price, but it changes without notice and independently of the specification, so this directory has no field for it and the row stays blank rather than carrying a figure that would silently go stale. Values marked ≈ were converted by this directory from the unit system the source published; the unmarked figure in the same row is the published one.
Evidence tiers backing this record: Manufacturer. Unmarked values come from manufacturer documentation; any value drawn from a lower tier is labeled inline with that tier. Where two sources disagreed, the higher tier was recorded and the disagreement noted.

Sources

  1. [1]
    G31 Gen4 — Technical DataManufacturer Manufacturer product page
    Accessed 2026-08-12
  2. [2]Accessed 2026-08-12
  3. [3]
    Glock Answers Frequently Asked QuestionsManufacturer Manufacturer support page
    Accessed 2026-08-12

Common questions

Answered from this record's cited fields only. Where a manufacturer publishes nothing on a subject, the question is not asked rather than answered with a blank.

01What caliber is the Glock G31 Gen 4?

The Glock G31 Gen 4 is chambered in .357 SIG. Glock writes it as .357. Ammunition should match the exact chambering marked on the firearm.

02How many rounds does the Glock G31 Gen 4 hold?

Glock lists a 15-round standard magazine for the G31 Gen 4. Glock also lists 10 and 16-round capacities as optional. These are magazine capacities; a round carried in the chamber is not counted here.

03What is the barrel length of the Glock G31 Gen 4?

Glock lists a barrel length of 114 mm / 4.49 in.

04What are the dimensions of the Glock G31 Gen 4?

Glock publishes 202 × 32 × 139 mm / 7.95 × 1.26 × 5.47 in (height: including magazine). Any measurement basis shown is the manufacturer's own qualifier; where none is shown, the manufacturer states none.

05How much does the Glock G31 Gen 4 weigh?

Glock publishes 660 g / 23.28 oz without a magazine; 740 g / 26.1 oz with an empty magazine fitted. These are different measurement conditions and are not interchangeable.

06What size class is the Glock G31 Gen 4?

Glock lists the G31 Gen 4 as Standard. This directory normalizes that to its full-size frame class, so records from different makers can be grouped; the manufacturer's own wording is kept alongside it.

07Is the Glock G31 Gen 4 striker-fired?

Glock publishes "Safe Action" as its own name for the action and does not classify an ignition type for the G31 Gen 4. This directory records the manufacturer's wording and leaves the ignition field empty rather than inferring a classification the source does not state.

08What is the trigger pull on the Glock G31 Gen 4?

Glock lists 28 N / ≈6.29 lb. A published figure is a specification rather than a measurement of any individual firearm.

09Does the Glock G31 Gen 4 have a warranty?

Glock states: One year from original purchase by the initial consumer; regional terms apply. Terms are as published at the date this record was checked and may vary by region.