Side-by-side · Manufacturer-published fields only
Heckler & Koch USP40 Compact (V1) vs Heckler & Koch USP45 Compact (V1)
Heckler & Koch publishes both as USP models. They are chambered differently — the USP40 Compact (V1) in .40 S&W, the USP45 Compact (V1) in .45 ACP — so nothing below compares their cartridges. The USP45 Compact (V1) is 7 mm / 0.28 in longer overall; its barrel is 5 mm / 0.2 in longer; the USP40 Compact (V1) lists 4 rounds more of standard capacity.
Computed differences06
| Field | Difference |
|---|---|
| Overall length | 7 mm / 0.28 in (USP45 Compact (V1) is greater) |
| Overall width | Identical figures |
| Overall height | 1 mm / 0.04 in (USP45 Compact (V1) is greater) |
| Barrel length | 5 mm / 0.2 in (USP45 Compact (V1) is greater) |
| Weight | Not published by both |
| Standard capacity | 4 rounds (USP40 Compact (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 | USP40 Compact (V1) | USP45 Compact (V1) |
|---|---|---|
| Manufacturer | Heckler & Koch | Heckler & Koch |
| Chambering | .40 S&W | .45 ACP |
| Overall dimensions | 173 × 35 × 127 mm / 6.81 × 1.38 × 5 in | 180 × 35 × 128 mm / 7.09 × 1.38 × 5.04 in |
| Barrel length | 91 mm / 3.58 in | 96 mm / 3.78 in |
| Standard capacity | 12 rounds | 8 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 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.