Parts
At HK Parts, we offer a wide range of high-quality Heckler and Koch accessories and components for your favorite firearms. Whether you are upgrading a Heckler and Koch pistol or rifle, or building with parts kits, we have you covered. Explore top-rated components for VP9, USP, P30, MP5, MP5K, G36, HK416, and more. From triggers, barrels, and grips to magazines, stocks, and sights, find the parts you need to enhance performance, reliability, and function.
Popular upgrades include match triggers, threaded barrels, compensators, optic plates, and extended magazines. Rifle owners often add enhanced stocks, forearms, and ambidextrous controls.
MP5 and MP5K kits are top sellers, giving shooters authentic components for iconic builds. G36 and HK416 kits are also highly sought after by collectors and professionals alike.
HKP offers the world’s largest H&K-focused catalog, with better availability, faster fulfillment, and expert support compared to general retailers.
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HK MP5SD Barrel Port Cleaning Brush Replacement Cartridge
HKP HK Parts
$38.75HKP MP5SD Replacement Cartridge for Barrel Port Brush Replacement cartridge for HK MP5SD barrel port brush. Our replacement cartridge is compatible with factory HK barrel brush assemblies. Compatible With: HK MP5SDHKP-21294$38.75 -
HK P30, P30S Tactical Barrel - 9mm - 4.48" - Threaded 13.5x1 LH
H&K Heckler & Koch
$274.95H&K P30/P30S 9mm Tactical Barrel - Threaded 13.5x1 LH New factory OEM German barrel mande at the HK factory from HK German Cold Hammer Forged barrel blanks, heat treated and finished to HK specs. This is the finest threaded barrel available for the...HKP-16851$274.95 -
HK416, MR556, HK417, MR762 Handguard Locking Screw - X Style
H&K Heckler & Koch
$29.95Heckler and Koch Handguard Locking Screw for your HK416, MR556, HK417, MR762 Replacement handguard locking screw that secures the handguard to the upper receiver. This version features the "X" allowing the bolt head or HK sling hood tool to be used for...HKP-02680$29.95 -
HK .45 ACP Laser Bore Sighter
AIM
$19.95AIM .45 ACP Laser Bore Sighter Red laser bore sighter designed for .45 ACP firearms to assist with initial optic or sight alignment. This chamber-insert style bore sighter allows users to get on target quickly before live-fire zeroing, reducing time and...HKP-16217$19.95 -
HK MP5/SP5 9mm SEF Universal Trigger Housing - Clipped & Pinned - USED
H&K Heckler & Koch
$99.95H&K MP5/SP5 9mm SEF Universal Trigger Housing - Clipped & Pinned - USED A one size fits all approach for the MP5 and SP5 style semi-auto shelf. This is the best option if you have a MP5 receiver or a SP5. You can easily swap the lower trigger...HKP-21346$99.95 -
HK MP5K, SP5K Folding Brace
B&T Brugger & Thomet / SB Tactical
$239.95Folding Brace - Swiss - B&T MP5K, SP5K Factory Swiss B&T MP5K, SP5K Folding Pistol Brace with the SB Tactical/B&T components assembled. A rare offering using the B&T Swiss manufactured folding polymer end cap with sling swivel. Available...HKP-19356$239.95 -
HK UMP Magazine Body - .45 ACP - 25 Round
HKP HK Parts
$34.95UMP 45 25 Round Magazine Body Only - USA Made New US made UMP .45 cal 25 Round Factory Mag Body. Each magazine body will fit all HK UMP factory firearms as well as the HK USC's that have been converted to accept UMP magazines. Each magazine is made in...HKP-17020$34.95 -
HK33, HK53, HK93 Firing Pin Spring
H&K Heckler & Koch
$9.95New HK German 93, 33, & 53 .223/5.56 Firing Pin Spring. A must-have spare part as this is a high wear and replacement item. Compatible With: HK93, 33, 53 V93/V53, C93, C53 Custom builds and clonesHKP-00193$9.95 -
HK- U.S MP5K Shoulder Rig Lanyard With Ring
$19.95HKP - U.S MP5K Shoulder Rig Lanyard With Ring For use with all HK shoulder harnesses to quickly deploy the stock when folded. This is the same style unit used by agencies such as the Secret Service, FBI etc. Our U.S lanyard is upgraded with a ...HKP-20855$19.95 -
HK91, G3 Magazine Loader
Maglula
$29.95HK91, G3, PTR .308 LULA Mag Loader For those that have used Maglula products they offer the best mag loaders on the planet. Features: Loads a round a second, can unload the entire 20 round magazine in less than 3 seconds Safe on fingers and magazine...HKP-16228$29.95 -
HK MP5 Ejector Lever - .40 S&W / 10mm
H&K Heckler & Koch
$38.74German HK MP5 40, MP5 10mm Ejector Lever Get the ejector that is tried and true and the best upgrade you can make with your HK MP5 40 or 10mm. This is the finest and only ejector that will work properly for any length of time. Original factory German HK...HKP-00412$38.74 -
HK USP Compact Optic Plate - Trijicon RMR, Holosun SRO - Red Dot Pistol Mount
Evolution Gun Works
$49.95Evolution Gun Works HK USP Compact Trijicon RMR-SRO, Holosun 407C-507C Mount Includes: Mounting hardware Features: Material: 7075 aluminum Coating: matte black hardcoat Overall length: 1.780" Overall width: 1.1" Mounting hardware: (2) 6-32 flat...HKP-20043$49.95