Side-by-side · Manufacturer-published fields only
Heckler & Koch USP40 Compact (V1) vs Heckler & Koch USP45 (V1)
Heckler & Koch publishes both as USP models. They are chambered differently — the USP40 Compact (V1) in .40 S&W, the USP45 (V1) in .45 ACP — so nothing below compares their cartridges. The USP45 (V1) is 28 mm / 1.1 in longer overall; its barrel is 21 mm / 0.83 in longer; both list 12-round standard magazines.
Computed differences06
| Field | Difference |
|---|---|
| Overall length | 28 mm / 1.1 in (USP45 (V1) is greater) |
| Overall width | 3 mm / 0.12 in (USP40 Compact (V1) is greater) |
| Overall height | 15.5 mm / 0.61 in (USP45 (V1) is greater) |
| Barrel length | 21 mm / 0.83 in (USP45 (V1) is greater) |
| Weight | Not published by both |
| Standard capacity | Identical figures |
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 | USP40 Compact (V1) | USP45 (V1) |
|---|---|---|
| Manufacturer | Heckler & Koch | Heckler & Koch |
| Chambering | .40 S&W | .45 ACP |
| Overall dimensions | 173 × 35 × 127 mm / 6.81 × 1.38 × 5 in | 201 × 32 × 142.5 mm / 7.91 × 1.26 × 5.61 in |
| Barrel length | 91 mm / 3.58 in | 112 mm / 4.41 in |
| Weight | Not published | 887 g / 31.29 oz (HK's own column heading) |
| Standard capacity | 12 rounds | 12 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 USP40 Compact (V1) · Heckler & Koch USP45 (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.