Glock 19 vs. SIG P320

This is a compact against a full-size — on purpose.

Glock files the G19 Gen6 as a Compact. The P320 page SIG titles without any qualifier — the record this directory treats as the base model — is the Full-Size, and SIG's own P320 Nitron Compact is a separate listing. So this comparison crosses a class boundary, and it says so rather than pretending the two records sit in the same bracket. Readers comparing like for like should note the boundary; the numbers below are still the two base records' numbers.

The P320 is longer, deeper-barreled, and higher-capacity. Width runs the other way.

SIG lists the P320 at 8 inches overall against Glock's 7.28 — 18 mm — and its 4.7-inch barrel is 17.4 mm longer than the G19's 4.02 inches. SIG also lists two more rounds of standard capacity: 17 against 15, with neither page listing optional capacities.

The exception is width, and it is the most quotable number on this page: Glock lists the compact G19 Gen6 at 34.4 mm (1.35 in) where SIG lists the full-size P320 at 32 mm (1.25 in). By the makers' own figures, the compact is the wider pistol by 2.4 mm. Height, as usual across this directory's cross-brand pairs, is not a clean comparison: Glock's 128 mm includes the magazine, SIG's 140 mm does not state a magazine condition.

The weight gap is 162 grams, under near-matched conditions.

Glock publishes both conditions for the G19 Gen6: 570 g without a magazine and 640 g with an empty one. SIG publishes one figure with its basis stated — 802.3 g “w/ Magazine” — which is closer to disclosure than the P365 page manages, but still stops short of saying the magazine is empty. Under those near-matched conditions the P320 is 162.3 g (5.72 oz) heavier. That ranking is unlikely to reverse — but the delta is approximate by the sources' own wording, and this page keeps the caveat attached.

Each maker publishes something the other does not.

Glock attaches a number to its trigger — 26 N, about 5.85 lb — and a date to this generation, the January 2026 Gen6 launch. SIG publishes neither for the P320: no trigger figure, and no reachable dated launch source, so the year stays unrecorded. In the other direction, SIG's operator's manual classifies the P320's mechanism outright — “a striker fired, mechanically locked, short recoil operated pistol” — where Glock's pages label the G19 only with its Safe Action trademark and classify no action axis. The matrix keeps each maker's own vocabulary rather than translating one into the other.

What the data supports—and what it cannot.

The manufacturer records support a clear size-and-capacity distinction with one genuine surprise in the width column. They do not establish that either pistol is more reliable, more accurate, easier to carry, or a better personal fit — and the class boundary means a reader comparing carry candidates may want SIG's compact listings, which are separate records. Those conclusions require evidence and context beyond the specification sheets.

Base records only: no Gen5, no MOS, no Carry, no XSeries.

This article compares the G19 Gen6 record — Gen6 pistols are optic-ready as standard, so there is no separate MOS variant, and the Gen5 pages remain separate older records — with SIG's P320 Full-Size, SKU 320F-9-BSSP. The 10-round state-restricted SKU, the Nitron Compact, Carry, XFive, XCarry, XTEN, AXG, Spectre, and the M17/M18 military models are separate listings and separate records. Nothing measured here transfers to them.

Open the current G19 recordOpen the current P320 recordCompare current directory records