Small Parts
Explore our extensive selection of HK small parts at HKParts, perfect for repairs, upgrades, and custom builds. Our inventory includes high-quality, precision-machined replacement parts and maintenance kits designed for a wide range of HK models. Whether you need push pins, springs, or custom components, our HK-specific small parts ensure optimal performance and durability for your firearm.
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On Sale
HK G36, SL8 Push Pin for Handguards, Lowers, Magwells
H&K Heckler & Koch
Now: $17.05Was: $18.95HKP HK G36, SL8 Forearm, Lower, Magwell U.S Push Pin U.S. made G36 push pin finished in black oxide. This push pin is also required for converting the SL8 to a G36. G36's use three of these factory push pins per rifle whereas the SL8 has two.Now: $17.05Was: $18.95 -
On Sale
HK USP Optic Plate - Burris FastFire - Red Dot Pistol Mount
HKP HK Parts
Now: $39.96Was: $49.95HKP HK USP Red Dot Pistol Mount Red Dot mounting plate to allow the use of a Burris Fast Fire, Docter, Vortex Venom or other similar specs Red Dot Sights. Compatible With: HK Full Size - USP 9mm HK Full Size - USP .40 HK Full Size - USP .45 (Not...Now: $39.96Was: $49.95 -
On Sale
M-LOK Rail Section - 3 Slots
Magpul
Now: $17.05Was: $18.95Magpul M-LOK 3 Slots Rail Section Designed for use with all M-LOK compatible hand guards and forends, M-LOK aluminum rail sections allow the attachment of various 1913 Picatinny spec rail-mounted accessories such as lights, vertical grips, etc. Machined...Now: $17.05Was: $18.95 -
On Sale
HK MP5, G3, PTR, HK93 Push Button for Magazine Catch
H&K Heckler & Koch
Now: $8.05Was: $8.95Push Button For Magazine Catch Compatible With: G3 91 MP5 MP5K SP5K-PDW (For SP5K's not equipped with the paddle release, purchase this kit) 94 93 33 PTR, Clones, ETC.Now: $8.05Was: $8.95 -
On Sale
HK45, HK45C, USPC Magazine Floorplate - .45 ACP - 10 Round
H&K Heckler & Koch
Now: $13.46Was: $14.95H&K 10 Round HK USPC/45C 45 Magazine Floorplate Each floor plate is the new style rubberized floorplate for enhanced life. A great spare part to have on hand for repair and replacement of parts. This floorplate is commonly called the "elephant foot"...Now: $13.46Was: $14.95 -
On Sale
HK416, MR556 HK417, MR762 Spring- Firing Pin
H&K Heckler & Koch
Now: $13.46Was: $14.95H&K MR556/MR762/416/417 Firing Pin Spring This part is great to have on hand as this item is a high wear and replacement part and one of the most common breakage parts on the HK 416/MR556 rifles. Compatible With: HK MR556 HK 416 HK MR762 HK 417 HK...Now: $13.46Was: $14.95 -
On Sale
HK German Roller +2 - Used - 8.02mm
H&K Heckler & Koch
Now: $7.16Was: $7.95H&K German Roller +2 - Used - 8.02mm Used HK standard (8.02 mm) locking roller. The proper roller size is essential for proper bolt gap. HK German Manufacture. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the...Now: $7.16Was: $7.95 -
On Sale
HK MP5, HK94, MP5K, SP89 Firing Pin - Titanium
HKP HK Parts
Now: $39.96Was: $49.95HK Parts Titanium Firing Pin for HK MP5, HK MP5K, HK94, and HK SP89 Grade 6 Titanium firing pin. Each was made using the factory HK specifications from original HK German blueprints. This is the finest US made Titanium firing pin available anywhere, at...Now: $39.96Was: $49.95 -
On Sale
HK USP Full Size Optic Plate - Trijicon RMR, SRO Holosun - Red Dot Pistol Mount
Evolution Gun Works
Now: $44.96Was: $49.95Evolution Gun Works HK USP Full Size Trijicon RMR-SRO, Holosun 407C-507C Mount Includes: Mounting hardware Features: Material: 7075 aluminum Coating: matte black hardcoat Overall length: 1.780" Overall width: 1.1" Mounting hardware: (2) 6-32...Now: $44.96Was: $49.95 -
On Sale
HK USP, USP Tactical, USP Expert Complete Recoil Assembly
H&K Heckler & Koch
Now: $85.45Was: $94.95H&K HK USP/ Tactical/ Expert Complete Recoil Assembly Brand new factory German manufacture. Compatible With: HK USP 45 Tactical HK USP 45 Expert HK USP 45 Elite Tech Note: The USP Tactical recoil assembly can be used in a standard USP 45 without...Now: $85.45Was: $94.95 -
On Sale
HK VP9, VP9SK Right Side Charging Support
H&K Heckler & Koch
Now: $6.25Was: $6.95H&K HKVP9/VP9SK Right Side Charging SupportNow: $6.25Was: $6.95 -
On Sale
HK91, G3 Firing Pin
H&K Heckler & Koch
Now: $17.95Was: $19.95HK G3, HK91, PTR 762/.308 Firing Pin HK German, new factory part made from steel. Great for spares as this is a common wear item. Compatible With: HK G3 HK91 HK PTR CETME & C308Now: $17.95Was: $19.95