Heckler & Koch USP9 (V1) vs Heckler & Koch USP9 Compact (V1)

Heckler & Koch publishes both as USP models. Both are chambered in 9x19mm Parabellum. The USP9 (V1) is 22 mm / 0.87 in longer overall; its barrel is 17 mm / 0.67 in longer; the USP9 (V1) lists 2 rounds more of standard capacity. One field is not comparable — overall height — because the makers publish them on different measurement bases.

Computed differences06

Field	Difference
Overall length	22 mm / 0.87 in (USP9 (V1) is greater)
Overall width	3 mm / 0.12 in (USP9 Compact (V1) is greater)
Overall height	Not comparable — USP9 (V1): no basis stated; USP9 Compact (V1): HK's metric cell is blank in this caliber's row, so the millimetre figure is converted from its published 5.00 in
Barrel length	17 mm / 0.67 in (USP9 (V1) is greater)
Weight	Not published by both
Standard capacity	2 rounds (USP9 (V1) is greater)

How these differences are computed: each is the arithmetic difference between the two published figures, and it is only shown where both sources measured the field the same way. Where a source states a measurement basis the other does not match, the row says so instead of subtracting — figures on different bases are not comparable even when the numbers sit side by side. Differences marked ≈ involve at least one figure this directory converted between unit systems, so the difference is no more precise than that conversion.

Published fields, side by side

Field	USP9 (V1)	USP9 Compact (V1)
Manufacturer	Heckler & Koch	Heckler & Koch
Chambering	9x19mm Parabellum	9x19mm Parabellum
Overall dimensions	195 × 32 × 135 mm / 7.68 × 1.26 × 5.31 in	≈173 × 35 × 127 mm / 6.81 × 1.38 × 5 in (height: HK's metric cell is blank in this caliber's row, so the millimetre figure is converted from its published 5.00 in)
Barrel length	108 mm / 4.25 in	91 mm / 3.58 in
Weight	770 g / 27.2 oz (HK's own column heading)	Not published
Standard capacity	15 rounds	13 rounds
Trigger pull	51 N / ≈11.47 lb (double-action); 20 N / ≈4.5 lb (single-action)	51 N / ≈11.47 lb (double-action); 20 N / ≈4.5 lb (single-action)
Verification	Source verified 2026-08-13	Source verified 2026-08-13

Full records, with every value beside the source it came from: Heckler & Koch USP9 (V1) · Heckler & Koch USP9 Compact (V1). More from these makers: Heckler & Koch.

Reference information only. Not legal, purchasing, training, carry, storage, or assembly advice. Manufacturer technical data are rounded and may change without notice. Spotted an error? Submit a source-backed correction.