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, SP5K Extractor Spring - 9mm
MKE
$6.95MKE HK MP5, MP5K - Extractor Spring - 9mm Extractor spring for all 9mm HK variants including clones. This spring is the #1 repair & replacement item for the MP5 and MP5K family of firearms. Compatible With: HK MP5 HK MP5K HK SP5 HK...HKP-22481$6.95 -
HK MP5, MP5K, G3, HK93 Paddle Magazine Release - Extended - EMR
HKP HK Parts
$44.95HKP HK Parts Paddle Style Extended Magazine Release with EMR for HK MP5, HK G3, HK 33 and more A great addition to any paddle style mag release, such as those found on an HK. The extended mag release is machined from a solid billet of aircraft grade...HKP-17079$44.95 -
HK VP9, VP9SK, VP40 Enhanced Support Sleeve
HKP HK Parts
$14.95 - $19.95HKP HK VP9/VP40 Enhanced Support Sleeve The support sleeve in the VP series pistols is a crucial component that allows for the removal of the slide plate, firing pin assembly, and other parts. The factory version is made from polymer, which can wear down...HKP-18677-M$14.95 - $19.95 -
HK USP, USPC .45 Match Hammer Spring
H&K Heckler & Koch
$5.95HK USP, USPC, & HK45 Match Hammer Spring The match hammer spring is also known as the USPC standard hammer spring. This is also the correct spring needed for the light, TGS, and LEM conversion for the USPC & other custom pistol configurations...HKP-01410$5.95 -
Replacement Screw Set for Red Dot Sight - RMR
USA
$1.95Replacement Screw Set For Trijicon RMR Set of 2 6-32 x 1/2" flat head socket cap screws with thread locker. Requires a 2mm allen head key. Replacement or spare set to mount your Trijicon RMR optic to a #2 optic mounting plate.HKP-20035$1.95 -
HK91, G3 Cocking Handle Axle Pin
H&K Heckler & Koch
$9.95New HK German G3, 91, 21, & PTR Cocking Handle Axle Pin This is a new HK factory part for the .308 HK rifle. This part is the axle pin that holds the cocking handle in place on the cocking tube support. Will also work perfectly for all HK93, HK53,...HKP-01690$9.95 -
HK GSG-5 Push Pin Upgrade Kit - .22LR
H&K Heckler & Koch
$29.95H&K GSG-5 Push Pin Upgrade Kit This item is a set of genuine HK German factory push pins that will upgrade all your GSG-5 rifles or pistols to quick take-down push pins. This is one of the most common and desirable upgrades available for your GSG5...HKP-01064$29.95 -
HK Sling Pin - Large - Quick Detach Attachment
HKP HK Parts
$37.95HKP Quick Detach Sling Attachment Sling Pin - Large The large stock push pin is used to retain the stock to the receiver on the 90 series of firearms. The QD sling pin is a great replacement item as it will allow the user to simply swap the push pin for...HKP-18070$37.95 -
Out Of Stock
HK MP5, HK90 Series Forearm Sling Pin - Quick Detach Attachment
HKP HK Parts
$37.95HKP Quick Detach Sling Attachment Sling Pin - Small The small push pin is used to retain the forearm to the receiver on the HK90 series of firearms. The QD sling pin is a great replacement item as it will allow the user to simply swap the push pin for...HKP-18071$37.95 -
HK MP5, HK90 Series Ejector Axle Spring Ring - SEF, Ambi
USA
$1.95Ejector Lever Axle Retaining Spring This is the perfect spring ring to replace your worn out ejector lever axle spring ring. Made to HK spec for the best US replacement part on the market. Replacement of the retaining spring clip is necessary to keep...HKP-20629$1.95 -
HK91, G3 Rear Push Pin Reinforcement Weldment
PTR
$29.95HK91, G3, PTR, CETME Push Pin Reinforcement Weldment HK91/G3/PTR91 or CETME steel receiver flat weldment that is added to the rear of the receiver where the 2 large stock push pins install to reinforce this section of the receiver against damage or use...HKP-18224$29.95 -
HK VP9 Series Trigger Pull Spring Set
Lazy Wolf
$19.95Lazy Wolf Guns Duty/Defensive Carry Enhanced Trigger Pull Spring Kit Based on the Lazy Wolf Guns Design. We now have an intermediate drop in set of springs for the utmost in performance and reliability in ALL VP9 family pistols. Defensive carry,...HKP-19515$19.95