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 Stock Pin Bushing Weldment
HKP HK Parts
Now: $3.16Was: $3.95HK Stock Push Pin Bushing Weldment All-steel stock pin bushing weldment for welding in the rear of the flat. This bushing welds into the folded flat and guides the large push pin through the receiver to hold the stock to the receiver. Compatible...Now: $3.16Was: $3.95 -
On Sale
HK VP9, VP9L Optic Plate Screw
HKP HK Parts
Now: $1.56Was: $1.95Replacement Screw For VP9, VP9L Optics Plate & Optics Filler Cover Torx head plus T20 steel replacement screw for any HK German or USA made VP9 optics ready slide filler plate or optics plate. **Each screw is sold separately/individually. Please...Now: $1.56Was: $1.95 -
On Sale
HK Roller Retainer Pin - New Style
H&K Heckler & Koch
Now: $6.25Was: $6.95HK Roller Retainer Pin, Clamping Sleeve- New Style This part works with all roller retainer plates and springs. HK started this change of roller retainer pins starting in all 2011-produced bolt heads. Works with all styles of roller retainer plates...Now: $6.25Was: $6.95 -
On Sale
HK MP5 Pistol Stabilizing Brace - .22LR
SB Tactical
Now: $134.95Was: $149.95SB Tactical - HK MP5 .22LR Pistol Stabilizing Brace The SBT5-22 Pistol Stabilizing Brace® enhances your HK MP5 .22LR with an integral, side-folding polymer endplate. The SBT5-22 gives you all of the advantages of a pistol with improved control by...Now: $134.95Was: $149.95 -
On Sale
HK 90 Series Axle - Ejector Lever - US
HKP HK Parts
Now: $7.96Was: $9.95US Ejector Lever Axle This US ejector lever axle pin holds the ejector lever in place in the trigger pack. Made out to HK spec for the best US replacement part on the market. The best replacement for your worn out or broken axle. A must have replacement...Now: $7.96Was: $9.95 -
On Sale
HK MP5K Locking Piece - #28, 80 Degree
RCM
Now: $31.46Was: $34.95RCM HK MP5K/N/PDW # 28 Locking Piece 80 Degree This part is used in conjunction with a suppressor and 147-grain or heavier ammunition. This item is made 100% here in the US from enhanced steel and heat treated to the proper specifications...Now: $31.46Was: $34.95 -
On Sale
HK MP5 Magazine - 9mm - 30 Round
AC-Unity
Now: $20.66Was: $22.95AC-Unity 30 Round HK MP5 9mm Magazine CLICK ON THE "Bulk Pricing" LINK ABOVE (UNDER THE SKU NUMBER) FOR OUR BULK PRICING SCHEDULE The AC-Unity 30 round MP5 magazine is a lightweight, impact resistant and reliable magazine for all 9mm HK MP5, SP5,...Now: $20.66Was: $22.95 -
On Sale
HK MP5, SP5 Stock - A2 Fixed
Michaels Machines
Now: $161.95Was: $179.95HK MP5, SP5 Stock - A2 Fixed - US Made Each stock counts as one US-made compliant part. Perfect for that build where you US-made component is required for compliance. This is the finest US-made MP5 stock as it includes a rubberized backplate to mitigate...Now: $161.95Was: $179.95 -
On Sale
HK MP5 .22LR Match Trigger Upgrade Spring Kit
HKP HK Parts
Now: $13.99Was: $17.49H&K MP5 .22 Match Trigger Spring Kit - Set of 3 Enhanced Springs The HK Parts Match drop-in spring upgrade set will enhance your MP5-22's trigger pull to an even smooth, crisp, and lighter pull that will promote better control, which in turn promotes...Now: $13.99Was: $17.49 -
On Sale
HK MP5 Handguard - M-LOK
MI Midwest Industries
Now: $112.45Was: $124.95MI MP5 M-LOK Forearm Compatible professional grade one piece design Simple installation, include all tools Mil-spec top rail. Features 15 full and 5 half M-LOK slots. Features two anti-rotation QD sling swivel sockets. Constructed of 6061 aluminum, hard...Now: $112.45Was: $124.95 -
On Sale
HK VP9SK, P30SK Magazine - 15 Round - 9mm
H&K Heckler & Koch
Now: $44.10Was: $49.00HK VP9SK & P30SK 9mm - 15 Round Magazine New German HK manufacture 15 Round 9mm P30SK, VP9SK mag. New factory fresh German HK manufacture. Compatible With: HK VP9SK HK P30SKNow: $44.10Was: $49.00 -
On Sale
HK Cleaning Brush - Barrels - Chamber Face
HKP HK Parts
Now: $20.79Was: $25.99HKP Chamber Face Brush For All Barrels This brush was specifically designed to clean those hard-to-reach nooks and crannies in the barrel face. Threaded to fit all standard 8/32 US cleaning rods. Compatible With: G3, 91, PTR 93, 33, 53 MP5, MP5SD,...Now: $20.79Was: $25.99