Head to head

Arex Delta Gen.2 M vs Glock 19 Gen5

By Cole Harlan, EditorUpdated Nov 5, 2026How we verifyEditorial standards

Both list a 102 mm barrel, but the Arex is the smaller pistol on paper: its tech sheet prints a 1.18″ width and 19.1 oz without a magazine, against Glock’s 1.34 inch overall width and 21.52 oz without a magazine. Arex prints its height (4.7″) without saying whether the magazine is counted, while Glock’s 5.04 inch includes it. Every figure is copied from each maker’s own sheet or page, checked November 5, 2026.

At a glance

Spec (maker label)	AREX Delta Gen.2 M	GLOCK 19 Gen5
Caliber	9x19mm	9x19 mm
Operation	Striker double action (Arex: striker spring “only partially compressed” as a cartridge is chambered)	Not yet verified (Glock lists “System: Safe Action®”)
Magazine	15-round magazine shown on the tech sheet (“15 ROUNDS MAGAZINE”)	Standard: 15; optional 15 / 17 / 24 / 31 / 33
Barrel length	102 mm // 4.0″	102 mm \| 4.02 inch
Length	181 mm // 7.1″	185 mm \| 7.28 inch (Overall length)
Height	121 mm // 4.7″ (magazine state not stated)	128 mm \| 5.04 inch (Height incl. Mag.)
Width	30 mm // 1.18″	34 mm \| 1.34 inch (Width, Overall)
Weight	Weight w/o mag: 541 g // 19.1 oz; weight w mag: 614 g // 21.6 oz	Without magazine: 610 g \| 21.52 oz; empty magazine: 670 g \| 23.63 oz; loaded magazine: 855 g \| 30.16 oz
Trigger pull	Not yet verified	26 N
Optic	Arex says each Gen.2 size “may be ordered in factory Optics Ready configuration”; this row is the standard M sheet	Not yet verified
Source (checked Nov. 5, 2026)	Arex Delta Gen.2 M tech sheet (PDF); product page: arex.us Delta Gen.2	us.glock.com G19 Gen5

Like for like: Arex’s “Weight w/o mag” and Glock’s “Without magazine” are the same kind of figure, but Arex’s “Weight w mag” does not say whether the magazine is empty or loaded, so we do not pair it with either Glock figure. Arex prints a plain “Height” and Glock prints “Height incl. Mag.”; we do not adjust either. Arex prints “Length” and Glock “Overall length.” We used the standard M figures (541 g and 614 g); Arex’s optics-ready sheet lists lighter weights and is not the row shown here. Glock notes its technical data “are rounded and do not reflect tolerances.”

Which to pick (on paper)

If you want the lighter printed weight: Arex lists 541 g (19.1 oz) without a magazine; Glock lists 610 g (21.52 oz) without a magazine.
If you want the narrower printed width: Arex lists 1.18″ (30 mm); Glock lists 1.34 inch (34 mm) overall.
If you want the shorter printed length: Arex lists 7.1″ (181 mm); Glock lists 7.28 inch (185 mm).
If you plan to mount a red dot: Arex says an optics-ready configuration is offered for each Gen.2 size; the Glock page we read states no optic cut. Confirm the exact variant and SKU with the maker before you buy.

We have not range-tested these; facts above are from the makers.

Not yet verified

Whether Arex’s height and “w mag” weight include a loaded or empty magazine.
Magazine capacity beyond the 15-round magazine shown on the Arex sheet (we have not confirmed any extended-magazine figure from Arex).
Trigger pull for the Arex and the Glock rifling twist.
The Arex figures come from its Delta Gen.2 M tech sheet PDF; we could not confirm a public address for that file, so the product page is linked instead. The product page itself prints the size names but not these figures as text.
Prices are not shown.

Frequently asked questions

What barrel length does the Arex Delta Gen.2 M list?

Arex lists 102 mm (4.0 in) for the Delta Gen.2 M. Glock lists 102 mm (4.02 inch) for the G19 Gen5.

How much does the Arex Delta Gen.2 M weigh?

Arex lists 541 g (19.1 oz) without a magazine and 614 g (21.6 oz) with a magazine. Glock lists 610 g (21.52 oz) without a magazine and 670 g (23.63 oz) with an empty magazine for the G19 Gen5.

How wide is the Arex Delta Gen.2 M?

Arex lists 30 mm (1.18 in). Glock lists 34 mm (1.34 inch) overall width for the G19 Gen5.

Arex Delta Gen.2 M vs Glock 19 Gen5

At a glance

Which to pick (on paper)

Not yet verified

Frequently asked questions

Sources

Keep exploring

At a glance

Which to pick (on paper)

Not yet verified

Frequently asked questions

Sources

Keep exploring

The Gun Release Report