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 MP5 .22LR Magazine - 10 Round - Walther
H&K Hechler & Koch / Walther
$39.95HK MP5 22 - 10 Round magazine Brand new Walther/HK German manufactured for the HK MP5-A5 & MP5SD .22 rifle & Pistols. Each magazine offers a 10 round magazine capacity & fits all HK, Walther, Umarex...HKP-19923$39.95 -
HK416, MR556 Retaining Spring - FFRS
HKP HK Parts
$4.99HKP HK MR556/HK416 FFRS Retaining Spring The retainer spring retains the handguard locking pin on the free floating rail system (FFRS). These can become damaged with the removal of the handguard...HKP-21503$4.99 -
On Sale
HK45, USP, Mark 23 Barrel O-Ring - .45 ACP - Red
HKP HK Parts
Now: $4.46Was: $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-...HKP-19316Now: $4.46Was: $4.95 -
Out Of Stock
HK33, HK53, HK93 Magazine - 30 Round - Steel
H&K Heckler & Koch
$72.95HK93, HK33, & HK53 - 30 Round Magazine HK Factory German. All-steel latest production magazine and hard to find. This magazine was discontinued in 2021 and is no longer in production. Stock up as we...HKP-00484$72.95 -
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...HKP-16752$44.95 -
On Sale
HK91, G3 Receiver Flat - US Made
PTR
Now: $79.97Was: $99.95HK G3, 91, PTR & CETME Flat - PTR Made by PTR with original HK tooling using factory specifications and a properly stamped receiver. No FFL is required as this is an unfolded flat that ships directly...HKP-02320Now: $79.97Was: $99.95 -
On Sale
HK VP9, P30, HK45, USP Firing Pin Block Spring - Enhanced
Lazy Wolf
Now: $7.96Was: $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...HKP-18110Now: $7.96Was: $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...HKP-02081$7.95 -
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...HKP-21354-M$109.95 -
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:HKP-16993$22.95 -
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...HKP-16999$29.95 -
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...HKP-20683$24.95