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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HK45, USP, Mark 23 Barrel O-Ring - .45 ACP - Red
HKP HK Parts
$4.95HKP HK .45 Barrel O-Ring All Caliber Pistols - Red A rare find as we have found a small lot of HK red-colored HK .45 O-rings. All HK O-rings are still made of the same material as the newer black O- rings only in the HK red color. A great spare and...HKP-19316$4.95 -
On Sale
KCI Glock Magazine - 26 Round - .45 ACP
Now: $7.46Was: $22.95KCI Glock 26-Round.45 ACP Magazine Compatible With: Glock .45 ACP double stack models 21 & 30 Features: Hardened steel insert encased in high-tech polymer (fully metal lined) Please Note: Like many new magazines, these have a stiff spring from...HKP-02298Now: $7.46Was: $22.95 -
HK VP9, P30, HK45, USP Firing Pin Block Spring - Enhanced
Lazy Wolf
$9.95Lazy Wolf HK VP/P30/USP/HK45 Enhanced Firing Pin Block Spring An exciting and desirable new offering as a joint collaboration from the widely renowned Master HK pistol smith Lazy Wolf Guns & HK Parts! This spring was designed by master pistol smith...HKP-18110$9.95 -
HK USP, P2000, HK45 Trigger Return Spring - Light
H&K Heckler & Koch
$7.95Heckler and Koch Light Trigger Return Spring for HK USP, HK P2000, and HK45 Great for LEM and standard variant conversions. Each spring should be used along with the light-firing pin block spring, as shown below in the related items. Compatible With: HK...HKP-02081$7.95 -
HK53 Recoil Rod Assembly - Steel
USA
$44.95HKP HK53 Recoil Rod Assembly - Complete - Steel US-made HK53 recoil rod assembly built to correct HK specifications. The steel rod is micro-polished and uses serviceable end caps for easy spring replacement. Each unit includes a factory German HK53...HKP-16752$44.95 -
Out Of Stock
HK MP5 Cocking Handle - Knurled - Extended
HKP HK Parts
$29.95HK MP5, MP5K Cocking Handle Extended Extended cocking handle for the MP5 style of firearms. Each cocking handle offers twice the grabbing area for charging the firearm. Crafted in the US from solid billet aluminum. These cocking handles also...HKP-16999$29.95 -
HK MP5, MP5K Bolt Group Backup Kit - Action 3
H&K Heckler & Koch
$22.95H&K MP5 Bolt Group Backup Kit - Action 3 This kit includes the highest wear and replace items on the MP5 action 3 bolt group, as well as the easy to lose pin. Includes: Factory German MP5 9mm Extractor Spring Factory German Action 3 Roller...HKP-16993$22.95 -
Out Of Stock
HK VP9, P30 Magazine Conversion Kit - Red Follower - 15 to 17 Round
H&K Heckler & Koch
$24.95HK Magazine Conversion Kit - VP9/P30 - 15 round to 17 round - Red Follower Factory OEM German HK magazine upgrade conversion kit that allows the end user to convert an existing VP9/P30 15 round magazine body/magazine to 17 round capacity. Each kit will...HKP-20683$24.95 -
HK MP5 Optic Mount - .22LR
MFI
$109.95Low Profile Scope Mount For All HK MP5 .22's (HK, Walther, & Umarex) & ATI GSG-5 Pistols Or Rifles Just released the latest second-generation MFI Low Profile Scope mount for the Umarex HK MP5 & GSG-5 models. MFI scope mount offers the lowest...HKP-02389$109.95 -
HK VP9, P30, VP9SK, P30SK, P2000SK Magazine Sleeve
X-Grip
$15.95HK VP9/P30 To VP9SK, P30SK & P2000SK XGRIP Sleeve Patent pending OEM factory accessory for the HK VP9SK, P2000SK & P30SK that allows the addition of the HK VP9, P30 magazine to be added that enhances the versatility, look, and feel of the gun...HKP-16669$15.95 -
Out Of Stock
HK MP5, SP5 Locking Piece #27 - 90 degree
RCM
$39.95HK MP5, SP5 Locking Piece #27 - 90 degree Machined and properly heat treated from ordnance grade steel. A must have component for users running a suppressed set up or cycling a variety of ammunition. This will assist with fine-tuning pistol...HKP-21334$39.95 -
HK MP5, MP5K Magazine - 30 Round - LEO Marked
H&K Heckler & Koch
$109.95Heckler and Koch HK MP5, MP5K 30 Round Magazine with Reproduction LEO Marking Get the classic LEO-marked look without the cost of rare, surplus mags. Each magazine starts as a factory-fresh German HK 30-round mag and is professionally laser engraved...HKP-21354-M$109.95