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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On Sale
HK MP5, SP5, MP5K, SP5K Magazine Clamp - Tri-Lock - 9mm
HKP HK Parts
Now: $31.95Was: $39.95HKP HK MP5, SP5, MP5K, SP5K Tri-Lock Magazine Clamp 9mm Triple magazine clamp HK MP5 magazines. Secures three 9mm magazines together for faster reloads and segregating ammo types (FMJ/JHP/subsonic/supersonic). Compatible With: MP5, SP5 MP5K,...HKP-22799-MNow: $31.95Was: $39.95 -
Out Of Stock
HK VP9 Optic Plate - Holosun K, Shield RMSc - Optics Ready - Red Dot Pistol Mount
H&K Heckler & Koch
$50.95Heckler and Koch Holosun K Optics plate for VP9 OR Models Genuine Heckler and Koch optics plate for HK VP9 Optics Ready (VP9OR) pistols. Use factory filler plate screws to install. Specifications: Made in Germany Steel Optics plate only...HKP-22381$50.95 -
On Sale
HK MP5, G3, HK93 Magazine Catch Push Button- Used
H&K Heckler & Koch
Now: $4.95Was: $8.95H&K MP5, G3, PTR, HK93 Push Button for Magazine Catch - Used Factory original HK push button replacement part. Limited quantity available. This is a used part, sold AS-IS, and is not eligible for return. Compatible...HKP-99316Now: $4.95Was: $8.95 -
On Sale
HK UMP, USC M-LOK Attachment Piece
HKP HK Parts
Now: $24.95Was: $29.95HKP HK UMP/USC M-LOK Attachment Piece Upgrade your UMP and USC with the HK Parts M-Lok attachment piece, designed to eliminate the hassle of snagging and shredding your knuckles on Picatinny rails. This exceptional set significantly expands the range of...HKP-22249Now: $24.95Was: $29.95 -
On Sale
HK91, G3 Conversion Magazine - .22LR - 20 Round - BLEMISHED
H&K Heckler & Koch
Now: $149.95Was: $199.95H&K Heckler & Koch's Conversion Magazine for HK91, G3 - Conversion Kit - 20 Round - BLEMISHED CONDITION MAY VARY. DENTS VISIBLE BUT MAGAZINES ARE STILL FUNCTIONAL. REFER TO PHOTOS TO ASCERTAIN CONDITION. Priced for ONE Conversion Magazine -...HKP-20750-BNow: $149.95Was: $199.95 -
HK G3 Recoil Rod - Demilled
H&K Heckler & Koch
$18.54H&K HK G3/91 Recoil Rod - Demilled These recoil rods were demilled from damage or broken end caps. Fully functional and sitll assembled with the spring, roll pins, nylon ring and captive pin. Perfect to have on hand for spares or custom builds.HKP-21298$18.54 -
Out Of Stock
HK UMP .40 - 30 Round Magazine - Used
H&K Heckler & Koch
$49.9530 Round Magazine – Used – UMP .40 S/W This magazine will fit all HK UMP .40 caliber UMP’s as well as the USC-UMP .40 caliber conversions. Used factory HK magazine. Compatible With: HK UMP .40 HK USC-UMP conversions LWRC SMG.40HKP-20816$49.95 -
On Sale
HK VP9L Rail Mount Compensator for Threaded Barrel Gen 2
HKP HK Parts
Now: $99.95Was: $169.95HKP HK VP9L Rail Mount Compensator for Threaded Barrel Gen 2 Specifications: Length: 4 1/4 inches Height: 2 1/2 inches Weight: 5 oz. Torque: Bottom Screws - 26 inch-lbs Side Screws - 18 inch-lbs Crafted from aircraft-grade billet aluminum and...HKP-20631Now: $99.95Was: $169.95 -
Out Of Stock
HK417, MR762, G28 Magazine Release - Ambidextrous
KDG Kinetic Development Group
$169.95KDG Kinetic Development Group Ambi Magazine Release for HK417, HK MR762, and HK G28 The HK 7.62 Ambi (Ambidextrous) Magazine Release. This is the first ambidextrous magazine release for the HK417 variant rifles. The mag release is a lever instead...HKP-19204$169.95 -
HK91, G3, MP5 Sear Catch - Steel - New Build
H&K Heckler & Koch
$69.95Heckler & Koch's Sear Catch Release - Complete For HK 90 Series Trigger Packs New HK German manufacture. Sear/Catch complete with installed detent, spring, and roll pin. Compatible With: HK MP5, HK MP5K HK91 HK G3 HK33, HK53, HK93 PTR Other 90...HKP-01459$69.95 -
On Sale
HK G36K Handguard
GSG9
Now: $95.95Was: $120.95GSG9 Handguard with Hand Stop and Heat Shield for HK G36K HK G36K length latest production HK G36K handguard with built in heat shield. Each unit features a built in hand stop with sling attachment points. Built in hard mounting points for adding...HKP-18217Now: $95.95Was: $120.95 -
On Sale
B&T TP9, MP9 Brass Catcher - Side Rail - Picatinny
B&T Brugger & Thomet
Now: $43.95Was: $55.95B&T TP9/MP9 Picatinny Brass Catcher Side Rail New Swiss Made. Fits the brass catcher for the TP9, MP9 firearms. Please note that the hardware is not included as they are riveted on at the B&T factory in most cases before shipping however, the...HKP-17296Now: $43.95Was: $55.95