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.
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
HK MP5 A3 Retractable Buttstock Release Lever
H&K Heckler & Koch
$19.95HK MP5 A3 Retractable Buttstock Release Lever For use with the newer Navy or F style A3 retractable MP5 stocks. Not for use on the older 1st generation metal levered MP5 stocks. This lever is much...HKP-16404$19.95 -
Out Of Stock
HK Trigger Pack - Ambi Burst 4 Position 0,1,2,F
H&K Heckler & Koch
$0.00Heckler and Koch 4 Position Ambidextrous 0,1,2,F Burst Trigger Pack New HK German 4 position burst trigger pack complete available in your choice of 9mm, 40/10, .223 & .308. We can set up each...HKP-00149$0.00 -
On Sale
HK MP5, HK33, HK93 Stock or Brace Adapter - ACE Style
HKP HK Parts
Now: $63.72Was: $99.95ACE Adapter for HK MP5 and HK 93 Each ACE adapter is made from a solid billet of CNC machined aircraft grade aluminum. Properly buffered with factory correct "H" buffers to protect your expensive...HKP-18504Now: $63.72Was: $99.95 -
On Sale
HK45C, USPC Magazine Extension - 20 Round - BLEMISHED
HKP HK Parts
Now: $20.46Was: $39.95HK45C & USPC .45 20 Round Magazine Extension Kit - BLEMISHED OLD VERSION COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART...HKP-17158-BNow: $20.46Was: $39.95 -
Out Of StockOn Sale
HK USP Magazine - Full Size - .40 S&W - 13 Round - USED
H&K Heckler & Koch
Now: $38.21Was: $59.95HK German USP 40 Full-Size Magazine - USED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. Compatible With: USP .40 FulHKP-00309-BL-USEDNow: $38.21Was: $59.95 -
On Sale
HK UMP, USC Picatinny Rail Set - 4 Piece - Used
H&K Heckler & Koch
Now: $149.96Was: $269.95Heckler and Koch 4 Piece Picatinny Rail Set for HK UMP and USC - UsedHKP-99471Now: $149.96Was: $269.95 -
On Sale
AR-15 C.A.R.L. 2-Round Limiter Lever for FRTs
ST Inc
Now: $130.50Was: $145.00ST Inc. 2-Round C.A.R.L. Lever for AR-15 Rifles Equipped with AS Designs ARC-Fire and Atrius Trigger Systems The C.A.R.L. (Cam Activated Reset Limiter) is a drop-in FRT-piggy-back system that...HKP-22561Now: $130.50Was: $145.00 -
On Sale
HK21, HK11 Barrel with Grip Handle and Flash Hider - 17.7"
RCM
Now: $980.96Was: $1,089.95HK21, HK11 Barrel with Grip Handle and Flash Hider - 17.7" RCM HK21 barrels are crafted from 41V50 CHF blanks and fully nitrided for optimal corrosion resistance. Each barrel ships complete with a...HKP-22533Now: $980.96Was: $1,089.95 -
On Sale
HK G36, UMP Handuard Handstop
OMEGA
Now: $26.96Was: $29.95HK UMP and G36 Handstop HK G36 hand stop kit. Complete with locking block and screw. Fits any G36 handguard without the need of rail segment. Compatible With: All G36 Models <HKP-22512Now: $26.96Was: $29.95 -
On Sale
HK SL8 to G36 Conversion Kit - Incomplete - BLEMISHED
Special Weapons
Now: $104.96Was: $319.95HK SL8 to G36 Conversion Kit - Incomplete - BLEMISHED VARYING CONDITION SHOWN - SOLD INVDIVIDUALLY DOES NOT INCLUDE STOCK OR AR-STYLE MAGAZINE ADAPTER. Will REQUIRE ADDITIONAL MACHINING TO THE STOCK:...HKP-99394Now: $104.96Was: $319.95 -
On Sale
HK90 Series Cocking Tube End Cap - Aluminum - USED
HKP HK Parts
Now: $5.96Was: $12.95HK Cocking Tube End Cap - Aluminum - USED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. Made from weight-saving aircraft-grade aluminum alloy...HKP-02806-USEDNow: $5.96Was: $12.95 -
On Sale
HK91, G3 JMK PRS Hybrid Stock - Walnut
JMK
Now: $349.16Was: $387.95HK91, G3 JMK PRS Hybrid Stock - Walnut The JMK HK91 PRS hybrid wood stock comes fully assembled and ready for a quick and easy install. This custom hybrid stock is based on the Magpul PRS Lite...HKP-22409Now: $349.16Was: $387.95