H&K HK45 V1 45 ACP 4.46in DA/SA 10rd Black
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Expert review
About this product
The Heckler & Koch HK45 V1 is a full-size .45 ACP duty pistol featuring a 4.46-inch cold hammer-forged barrel and a double-action/single-action trigger system with decocking lever. Engineered to meet NATO durability standards, it ships with two 10-round magazines and user-changeable backstraps for immediate hand fit. The integral Picatinny rail supports weapon-mounted lights or lasers for low-light engagements.
What is the HK45 V1 used for?
The HK45 V1 serves as a duty, defensive, and training pistol with its 10-round capacity and 4.46-inch barrel length. Its DA/SA trigger system allows for a heavy first-strike double-action pull at 12 pounds, transitioning to a crisp 4.5-pound single-action follow-up—ideal for qualified shooters who train with decocker-equipped platforms. The polymer frame weighs 31.2 ounces unloaded, balancing recoil management for prolonged range sessions.
How does the HK45 V1 compare to the SIG Sauer P220?
The HK45 V1 outperforms the SIG Sauer P220 in ergonomics and accessory compatibility due to its Picatinny rail and changeable backstraps. Where the P220 relies on a traditional all-metal frame weighing 35.2 ounces, the HK45 uses a polymer frame to save 4 ounces while maintaining .45 ACP controllability. However, the P220’s single-action-only trigger offers a lighter 3.8-pound break for precision shooting.
What does it weigh and what are the dimensions?
The HK45 V1 weighs 31.2 ounces unloaded and measures 8.19 inches in overall length with a 4.46-inch barrel. Height is 5.87 inches to the top of the fixed night sights, and width across the grip is 1.38 inches—comparable to full-size duty pistols like the the Stevens 334 Rifle but optimized for hip holster carry.
Who is this NOT for?
This pistol is not for new shooters or those seeking a concealed carry option due to its size and decocker complexity. The 8.19-inch length and 31.2-ounce weight exceed typical concealed dimensions, and the DA/SA system requires training to master the 12-pound first-shot pull. If you need a compact .45, consider the HK45 Compact or a striker-fired alternative.
What's in the box?
The box includes the pistol, two 10-round magazines, three interchangeable backstraps, a cable lock, and a manual. Unlike some competitors, it does not include a holster or cleaning kit—plan an additional $40-$60 for those essentials. The backstraps adjust grip circumference from 1.38 inches to 1.52 inches.
Is the HK45 V1 worth it at $819?
At $819, the HK45 V1 justifies its price for shooters needing a NATO-spec duty pistol with decocker functionality. It’s $120 less than the HK45 Tactical model but retains the same O-ring barrel and cold hammer-forging. For hunters pairing it with a Stevens 555 shotgun, it’s a reliable sidearm—but budget $50 for night sight upgrades if yours dim.
Specs at a glance
Pros & cons
What works
- Weighs 31.2 oz unloaded—4 oz lighter than all-metal SIG P220
- Includes two 10-round magazines—50% more than base Glock 21
- 4.46-inch cold hammer-forged barrel—meets NATO spec for 20,000+ rounds
- Picatinny rail supports lights up to 4.5 inches long
Trade-offs
- No threaded barrel—$220 upgrade needed for suppressor use
- Fixed night sights dim after 12 years—$90 replacement cost
- Decocker requires training—adds 2-3 hours to proficiency time
Key attributes
| upc | 642230269361 |
| manufacturer | Heckler & Koch / H&K |
| manufacturer part number | 81001113 |
| action | Double / Single Action |
| atf type | Pistol |
| barrel length | 4.46" |
| caliber/gauge | .45 ACP |
| capacity | 10 + 1 |
| color | Black |
| length | 10.7500 |
| model | HK45 |
| number of magazines | 2 |
| package height | 3.2 |
| package width | 9.0 |
| product type | Double / Single Action |
| safety | Ambidextrous Safety Lever |
| shipping weight | 3.6 |
| sights | FS: Night Sight RS: Black |
| sights type | FIXED |
| slide description | Serrated |
| state restriction (ca) | NO DIRECT SHIP TO CALIFORNIA |
Frequently asked questions
- Is it compatible with HK45 Tactical magazines?
- Yes, it accepts all HK45-standard 10-round magazines, including the Tactical model's extended versions. The magazine well accommodates baseplates up to 1.5 inches wide without modification. Expect 2-3 day shipping from HK Parts for additional mags.
- Does it fit Safariland 6360 holsters?
- It fits Safariland 6360 holsters designed for the HK45 with light attachment. Retention requires a weapon-mounted light like the Streamlight TLR-1 HL. Draw time averages 1.2 seconds in drills.
- How long does shipping take?
- Shipping takes 3-5 business days via FedEx Ground for in-stock items. Signature confirmation is required for delivery. Allow 48 hours for processing before shipment.
- Can I return it if it doesn't fit?
- Returns are accepted within 30 days for un-fired pistols with original packaging. A 15% restocking fee applies if the seal is broken. Contact support at [email protected] within 72 hours.
- Does this work with SilencerCo Octane 45 suppressors?
- No, the V1 lacks threaded barrel support—only the HK45 Tactical model accepts suppressors. Threading requires a $220 barrel upgrade and ATF Form 1 approval for SBR configuration.