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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Sling Pin O-Ring - Ambi
H&K Heckler & Koch
$1.95H&K Ambidextrous Sling Pin O-Ring HK ambidextrous sling pin replacement O-ring for all ambidextrous sling pins. This item is a common wear/breakage part that does need to be replaced from time to time. This is the part that creates the + seal to keep...HKP-01090$1.95 -
HK P7 Series Drop Safety Catch Spring
H&K Heckler & Koch
$9.95HK P7 Drop Safety Catch Spring This is one of the most common wear items on the P7 series of firearms—a must-have spare part and hard to find. Compatible With: PSP P7M8 P7M13 P7M10HKP-01353$9.95 -
On Sale
HK90, MP5K Sear Catch - Steel - US
HKP HK Parts
Now: $43.95Was: $47.95HKP HK Parts HK90, HK MP5K Sear Catch - Steel - USA Made - Billeted Machined - Steel Hard to find and important for keeping your HK build 922r compliant. This US-made sear counts as one US-compliant part for your rifle or build. Machined from a bar of...HKP-00378Now: $43.95Was: $47.95 -
On Sale
HK MP5, MP5K, HK93, HK91 Sight Clamping Screw - Rear Retainer
H&K Heckler & Koch
Now: $4.45Was: $4.95HK German Rear Sight Retainer / Clamping ScrewHKP-00868Now: $4.45Was: $4.95 -
On Sale
HK MP5, HK90 Series Hammer - Full Auto - Used
H&K Heckler & Koch
Now: $26.95Was: $29.95Hammer, Full Auto HK 90 Series Trigger Packs - German HK - Used German HK Hammer- used, surplus in VG-EXC shape and in perfect working order. This hammer is the hammer that is most commonly used in semi auto trigger packs as the secondary sear catch is...HKP-21442Now: $26.95Was: $29.95 -
On Sale
HK MP5, MP5F Recoil Rod Guide Ring - Enhanced
HKP HK Parts
Now: $2.95Was: $3.95HKP MP5F & MP5 40,10 Recoil Rod Guide Ring For Recoil Rod Assemblies - Enhanced New Enhanced material for greater longevity and durability Our US made recoil rod guides are the made from the strongest most durable material available much better than...HKP-17835Now: $2.95Was: $3.95 -
On Sale
HK USP Jet Funnel Magazine Spring - 9mm, .40 S&W
H&K Heckler & Koch
Now: $8.95Was: $9.95Heckler and Koch Jet Funnel 9mm and .40 S&W for HK USP Magazine Spring Latest Production Longer, Stronger Spring for All HK Jet funnel Magazines. Limited supplies are available on this hard-to-find spring. Great replacement for all HK...HKP-02508Now: $8.95Was: $9.95 -
On Sale
HK416, MR556, HK417, MR762 Takedown Pin Detent Spring
H&K Heckler & Koch
Now: $8.95Was: $9.95H&K HK MR556/MR762/416/417 Takedown Pin Detent Spring New HK German manufacture. Detent spring for the rear takedown pin. Compatible With: HK MR556 HK 416 HK MR762 HK 417HKP-02541Now: $8.95Was: $9.95 -
On Sale
HK VP9, VP9SK Cocking Aid Filler Left, Right Set
H&K Heckler & Koch
Now: $17.95Was: $19.95Cocking Aid Filler Piece Set For - HK VP9, VP9SK HK VP9/VP9SK Filler set replaces the cocking aids for a "flat" cocking area rather than raised cocking aids as comes standard on the HK VP9 pistol. These are a drop in part for the HK VP9 pistol. Brand new...HKP-17213Now: $17.95Was: $19.95 -
On Sale
HK VP9, VP40, USP Series, P Series Magazine Spring - 10 Round
H&K Heckler & Koch
Now: $5.95Was: $6.95New German HK Magazine Spring For 10 Round Magazines A must-have part as magazine springs are high wear and a common replacement item. Compatible With: HK USP 9mm HK USP 40 S&W HK USP Compact 9mm HK USP Compact 40 S&W HK USP Compact 357 SIG HK...HKP-01428Now: $5.95Was: $6.95 -
On Sale
HK416, MR556, HK417, MR762 Buffer Retainer Spring
USA
Now: $4.95Was: $5.95HK MR556/MR762/416/HK417 Buffer Retainer Spring This item is the spring for the buffer retainer that is held in the rear of the lower receiver. Compatible With: HK MR556 HK 416 HK MR762 HK 417HKP-20036Now: $4.95Was: $5.95 -
HK45, HK45C, USP Roll Pin - Ambi Control Lever
H&K Heckler & Koch
$2.95HK USP, 45 & 45C Ambidextrous Control Lever Set Roll Pin This item is to hold the right side lever onto the left side axle lever. These can easily be lost or damaged. A great spare part to have on hand. Compatible With: HK USP Full...HKP-02394$2.95