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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HK MP5, HK94, MP5K, SP89 Firing Pin - Titanium
HKP HK Parts
$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...HKP-17601$49.95 -
HK Locking Washer - Rear Sights
HKP HK Parts
$2.95HKP Rear Sights Locking Washer HK German rear sights toothed locking washer used in perfect working order.HKP-00869$2.95 -
HK90 Series Stock Locking Pin - Large
MKE
$6.95MKE Large Push Pin for your HK90 Series Stock Each large stock push pin is used to retain the stock to the receiver on the 90-series firearms. These are great replacement or spare part to keep on hand as they fit all of the 90-series firearms below. The...HKP-21593$6.95 -
HK45, HK45C, USPC Magazine Floorplate - .45 ACP - 10 Round
H&K Heckler & Koch
$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"...HKP-02210$14.95 -
Out Of Stock
HK MP5, HK33, HK53, HK93, HK91, G3 Locking Roller for Bolt Head - 8.04mm
H&K Heckler & Koch
$29.95H&K +4 Roller For Bolt Head 8.04mm - Over-Sized New HK German not surplus or used goods. The correct roller is essential for proper head spacing and the bolt gap. Compatible With: HKG3, 91 & PTR HK93, 33, 53 HK MP5, MP5K Cetme, C308 Clones...HKP-00508$29.95 -
HK MP5, G3, HK93 Magazine Catch Push Button
H&K Heckler & Koch
$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.HKP-01833$8.95 -
HK USP Optic Plate - Burris FastFire - Red Dot Pistol Mount
HKP HK Parts
$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...HKP-18898$49.95 -
HK VP9, USP, USPC Extractor Spring
H&K Heckler & Koch
$5.95H&K USP/USPC/VP40 Extractor Spring The extractor spring is one of the hardest working parts of your HK pistol. The extractor spring should be changed every 5K rounds. A must-have spare part to have on hand. Compatible With: HK USP 9, 40 .45...HKP-01079$5.95 -
HK91, G3 Firing Pin
H&K Heckler & Koch
$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 & C308HKP-00497$19.95 -
M-LOK Rail Section - 3 Slots
Magpul
$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...HKP-20495$18.95 -
HK MP5 Recoil Guide Rod Rivet - Used
H&K Heckler & Koch
$0.48H&K German Recoil Guide Rod Rivet-Used This rivet holds the stop pin and recoil spring captive and in place to the recoil rod itself. Compatible With: G3, 91, 33, 93, 53 MP5, 94 MP5K SP89 HK21 variantsHKP-16985$0.48 -
Trigger Pack Hammer Spring - Extra Power - 5.56 / .223 - 7.62x51 / .308
H&K Heckler & Koch
$14.95H&K (5.56/.223) & (7.62x51/.308) Hammer Spring- Extra Power New HK German extra power hammer spring for all .308/.223 Semi & Full Auto Trigger Packs. This is a must have spare replacement part for your HK firearm parts bin. The heavy hammer...HKP-16447$14.95