Heckler & Koch HK45 (V1)

Sourced from Web Archive captures of hk-usa.com, which still serves a Cloudflare "Just a moment..." interstitial to every request (re-checked 2026-09-30, HTTP 403) — see the VP9 record for the reasoning and for why heckler-koch.com is not used as a substitute. Every capture was content-checked before use (the Beretta preserved-challenge trap): the product page, the operator's manual and the warranty page are all real content. The product-page capture is the most recent HTTP 200 one, 2025-02-16, and the HK45 is a live product, so this record is as-published at that date and may drift. Separate listings under the base-model rule: 81000027 (V1 with three magazines and night sights), the V7 LEM configurations 81000028 and 81000029, the HK45 Tactical, the HK45 Compact and the HK45 Compact Tactical. THE TRIGGER ACTION FOLLOWS THE SKU. The product page's prose says the HK45 is "available in, or can be converted to" DA/SA and DAO (LEM) variants, so the line has no single trigger mode; catalogue number 81000026 names its own — "(V1) DA/SA" — and `system` quotes that wording. IGNITION AND OPERATING SYSTEM COME FROM THE ARCHIVED OPERATOR'S MANUAL, the edition the product page links (HK45-Series-Operators-Manual-1_19_2024.pdf). Its parts glossary says in as many words "HAMMER-Hits the firing pin to fire the gun" (p. 17), which is the ignition mechanism on its own axis rather than a component on a neighbouring one; the product page never uses the word "hammer" except in "cold-hammer forging", a manufacturing process (the Ruger Mark IV trap). The manual's specification table states "Operating Principle: Short Recoil" (p. 18); the product page's key-features list agrees in looser words, "Uses the proven modified Browning linkless recoil operating system". TRIGGER PULL IS THE MANUAL'S, AND HK PUBLISHES BOTH UNITS THERE: single action approx. 20 N (4.50 pound-force), double action approx. 51 N (11.46 pound-force), p. 18, listed in that order. The product page publishes no trigger-pull row for the HK45. Neither pull is converted by this directory; HK's 11.46 lb differs in the last digit from this directory's own conversion of 51 N (11.47 lb, as on the USP records), which is HK's rounding and is recorded as published. These are the DA/SA figures, which is the trigger this SKU is fitted with; the manual's separate LEM figures (7.5–8.5 lb, optional 4.5–5.5 lb, p. 8) belong to the V7 listings and are not recorded. THE MANUAL AND THE PRODUCT PAGE DISAGREE ON THREE FIGURES, AND THE CURRENT PAGE GOVERNS EACH, as on the G29 Gen5, G41 and G17L records. Barrel length: page 113.5 mm / 4.46 in, manual 114 mm / 4.47 in. Weight: both give 880 g, but the page's imperial figure is 31.2 oz and the manual's is 30.86 oz — and neither reconciles with 880 g, which is 31.04 oz, so the page's own pair is about 5 g apart (31.2 oz is about 885 g). Both page figures are recorded as published and neither is flagged `converted`, the VP9 handling. Magazine weight: page 90 g / 0.20 lb, manual 110 g (3.88 oz); there is no schema field for it. Every other published pair on the page reconciles: 204 mm/8.03 in, 150 mm/5.91 in and 39 mm/1.54 in check out, and 113.5 mm is 4.469 in, so the page's 4.46 is a last-digit truncation. WEIGHT BASIS: HK heads the column "With magazine" and never says the magazine is empty, so the value sits in `weightWithEmptyMagazine` with that caveat in `basis` — the SIG P320 reading. The manual heads its row plain "Weight". WIDTH BASIS: HK's heading is "Overall width w/lever"; the manual separately gives a 28.5 mm slide width and a 29 mm frame width, which are different measurements and are not recorded. Frame class is unset: the manual's introduction pairs "Ergonomic (HK45 full-size) and slim-line (HK45 Compact) grip profiles", which describes grip shapes across the line rather than classifying the pistol — the USP record's "full-size and compact models" call. HK does publish an "HK45 Series" (hk-usa.com/hk-series/hk45-series/), but that value is not in the directory's `Family` union, so `family` is unset pending a user decision. Year introduced is unrecorded: HK's January 15, 2009 release calls it "the new HK45 pistol" and "the first HK product officially 'Made in the USA'" without dating its introduction, and the product page dates only the USP45 it descends from ("first released in the 1995"). Warranty is HK's class-scoped Lifetime Limited Warranty, recorded with its conditions as on the VP9. Also published and unrecorded for want of a schema field: a 168.5 mm / 6.63 in sight radius (169 mm / 6.65 in in the manual), a 406 mm twist, an O-ring barrel, a cold-hammer-forged polygonal bore, an internal mechanical recoil reduction system, a 1911-matched grip angle, a 20,000-round minimum service life and the $849 MSRP. The page's key-features list says "Low profile drift adjustable 3-dot sights" while its specification row says "Fixed (Open square notch rear sight with contrast points)"; neither is recorded.