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Directory / Compare / USP45 (V1) vs USP45 Compact (V1)
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Heckler & Koch USP45 (V1) vs Heckler & Koch USP45 Compact (V1)

Heckler & Koch publishes both as USP models. Both are chambered in .45 ACP. The USP45 (V1) is 21 mm / 0.82 in longer overall; its barrel is 16 mm / 0.63 in longer; the USP45 (V1) lists 4 rounds more of standard capacity.

Computed differences06
FieldDifference
Overall length21 mm / 0.82 in (USP45 (V1) is greater)
Overall width3 mm / 0.12 in (USP45 Compact (V1) is greater)
Overall height14.5 mm / 0.57 in (USP45 (V1) is greater)
Barrel length16 mm / 0.63 in (USP45 (V1) is greater)
WeightNot published by both
Standard capacity4 rounds (USP45 (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.
Size, to scale
To-scale size envelopes: USP45 (V1) vs USP45 Compact (V1)Boxes drawn from published overall dimensions at one scale, aligned at the rear. Heckler & Koch USP45 (V1): 201 mm long, 142.5 mm high, 32 mm wide; Heckler & Koch USP45 Compact (V1): 180 mm long, 128 mm high, 35 mm wide.050 mm100 mm150 mm200 mmSide · length × heightUSP45 (V1) is 21 mm longerTop · length × width
  • Heckler & Koch USP45 (V1)Length 201 mm / 7.91 inHeight 142.5 mm / 5.61 inWidth 32 mm / 1.26 in
  • Heckler & Koch USP45 Compact (V1)Length 180 mm / 7.09 inHeight 128 mm / 5.04 inWidth 35 mm / 1.38 in
Boxes, not silhouettes: makers publish a pistol's overall envelope, not its shape, so that is all this draws. Every box is aligned at the rear and drawn at one fixed scale, the same on every page of this site, so drawings compare across pages. It is not life-size on your screen.
Published fields, side by side
FieldUSP45 (V1)USP45 Compact (V1)
ManufacturerHeckler & KochHeckler & Koch
Chambering.45 ACP.45 ACP
Overall dimensions201 × 32 × 142.5 mm / 7.91 × 1.26 × 5.61 in180 × 35 × 128 mm / 7.09 × 1.38 × 5.04 in
Barrel length112 mm / 4.41 in96 mm / 3.78 in
Weight887 g / 31.29 oz (HK's own column heading)Not published
Standard capacity12 rounds8 rounds
Trigger pull51 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)
VerificationSource verified 2026-08-13Source verified 2026-08-13
Full records, with every value beside the source it came from: Heckler & Koch USP45 (V1) · Heckler & Koch USP45 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 correction.