Heckler & Koch USP45 Compact (V1)

Name: Heckler & Koch USP45 Compact (V1)
Brand: Heckler & Koch

Heckler & Koch lists the USP45 Compact in its V1 double-action/single-action configuration as a short-recoil-operated .45 ACP pistol with a 96 mm polygonal barrel, a fibre-reinforced polymer frame, a safety and decocking lever on the left, fixed sights, and two 8-round magazines.

Record / hk-usp45-compact

USP45 Compact (V1)

Heckler & Koch · USP

Source verified

Scope note: ID number 81000343, "USP45 Compact, .45 ACP, (V1) DA/SA, safety/decocking lever on left, two 8rd magazines", UPC 642230260955. SEE THE hk-usp9 RECORD for the sourcing and the manual-versus-page reasoning, and hk-usp9-compact and hk-usp40-compact for the weight problem all three share. NO WEIGHT IS RECORDED, AND THIS IS THE ROW THAT PROVES THE TABLE RATHER THAN ONE CELL IS AT FAULT. Subtracting HK's "Without magazine" column from its "With empty magazine" column gives the magazine's weight: −43 g for the 9 mm Compact, −3 g for the .40, and +2 g here. Only this row avoids a negative magazine, and 2 g is refuted by HK's own full-size USP page, which states that a .45 USP magazine weighs 98.9 g. So all three rows are internally contradictory and no reading of the table survives. The archived manual has no weight column to arbitrate with. Both weight fields stay empty here as on the other two Compacts; see hk-usp40-compact for why the apparently salvageable "Without magazine" column was deliberately not rescued. THE SMALLEST STANDARD CAPACITY IN THE DIRECTORY, AND HK'S SOURCES AGREE ON IT. The specification row reads "8/10 Rounds", the manual's table gives this model a flat capacity of 8, and every catalogue number HK lists — 81000343, 81000344 and the two V7 LEM configurations — ships 8-round magazines, with no 10-round SKU among them. So 8 is recorded as standard and 10 as the optional figure the spec row publishes. Worth noting the manual and the page disagree in shape rather than in substance here: the manual states only the 8, the page offers 8 or 10, and recording both loses nothing. DIMENSIONS DIFFER FROM THE OTHER TWO COMPACTS ON EVERY AXIS BUT WIDTH, exactly as the full-size .45 does from its siblings: 180 mm long against their 173 mm, 128 mm tall against 127 mm, a 96 mm barrel against 91 mm and a 143 mm sight radius against 135 mm, with the 35 mm width shared. Every pair reconciles exactly — 180 mm/7.09 in, 128 mm/5.04 in, 35 mm/1.38 in, 96 mm/3.78 in, 143 mm/5.63 in — so the defect on this page really is confined to the weight columns. Trigger action follows the SKU: the spec row reads "SA/DA, DAO" without designating either, and 81000343 is the V1 double-action/single-action configuration. The V7 LEM and night-sight configurations are separate listings. Trigger pull is HK's 20 N (SA) and 51 N (DA), newtons published and pounds converted. Frame class is unset: "Compact" is part of the model name rather than a published size class. Year introduced is unrecorded, as on every USP record. Also published and unrecorded for want of a schema field: a 143 mm / 5.63 in sight radius, a polygonal bore profile, a fibre-reinforced polymer frame, a patented recoil reduction system, and the $1,209 MSRP.

Reference fields

Manufacturer	Heckler & Koch^[1]
Manufacturer series	USP
Firearm category	Handgun^[1]
Chambering	.45 ACP^[1]
Manufacturer chambering	.45 AUTO^[1]
Generation	Not yet verified
Directory frame class	Not yet verified
Manufacturer listing	Listed by HK as ID number 81000343, "USP45 Compact, .45 ACP, (V1) DA/SA, safety/decocking lever on left, two 8rd magazines", UPC 642230260955^[1]
Year introduced	Not yet verified
Manufacturer action label	SA/DA^[1]
Ignition	Hammer-fired^[2]
Trigger action	Double-action / single-action^[1]
Operating system	Recoil-operated^[2]
Overall dimensions	180 × 35 × 128 mm / 7.09 × 1.38 × 5.04 in^[1]
Barrel length	96 mm / 3.78 in^[1]
Magazine capacity	Standard: 8; optional listed: 10^[1]
Trigger pull	51 N / ≈11.47 lb (double-action); 20 N / ≈4.5 lb (single-action)^[1]
Slide finish	Not yet verified
Controls	Safety and decocking lever on the left; fixed sights; patented Lock-Out safety device on a corrosion-proof fibre-reinforced polymer frame^[1]
Warranty	Lifetime Limited Warranty on all new Heckler & Koch Inc. firearms purchased after January 1, 1998, to the original retail purchaser only and for that purchaser's lifetime — extendable to a donee named at the time of the original purchase, valid only on firearms imported into the United States and distributed by HK Inc., and applying only to retail purchases by individuals through an authorized HK dealer. Two exclusions are stated: firearms bought by United States military, government, law-enforcement or security organizations for duty issue instead carry a one-year limited warranty, or whatever a valid contract specifies; and rimfire .22LR rifles and pistols carry a one-year warranty^[3]
MSRP	Not recorded

Verification boundary: Published technical data are rounded, may not reflect manufacturing tolerances, and may change without notice. MSRP is not recorded: most cited product pages do publish a price, but it changes without notice and independently of the specification, so this directory has no field for it and the row stays blank rather than carrying a figure that would silently go stale. Values marked ≈ were converted by this directory from the unit system the source published; the unmarked figure in the same row is the published one.

Evidence tiers backing this record: Manufacturer. Unmarked values come from manufacturer documentation; any value drawn from a lower tier is labeled inline with that tier. Where two sources disagreed, the higher tier was recorded and the disagreement noted.

Sources

[1]
HK USP Compact — specifications and available configurations (ID 81000343), as published at captureManufacturer Manufacturer product page · Web Archive capture
Accessed 2026-08-13 · Captured 2025-02-16 from https://hk-usa.com/hk-models/usp-compact/
[2]
USP Operator's Manual, covering USP, USP Compact and USP Tactical — cited for the operating system, the firing-cycle description that establishes the ignition, and its 8-round capacity for this model; its dimension table is NOT used, being internally inconsistent on width, and it carries no weight columnManufacturer Manufacturer owner's manual (PDF) · Web Archive capture
Accessed 2026-08-13 · Captured 2024-06-11 from https://hk-usa.com/wp-content/uploads/USP-Operators-Manual-1.pdf
[3]
Heckler & Koch, Inc. Lifetime Limited Warranty (scopes by class — "All new Heckler & Koch Inc. firearms purchased after January 1, 1998")Manufacturer Manufacturer warranty page · Web Archive capture
Accessed 2026-08-13 · Captured 2026-02-06 from https://hk-usa.com/warranty/