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 416, MR556, G36, SL8 Gas Piston
Nefarious Arms
$74.95Nefarious Arms HK G36/SL8/HK 416/MR556 Gas Piston A great spare, upgrade, or replacement part for your HK. Includes 3 piston rings for a complete drop in replacement part. TiN coated for corrosion resistance. Compatible with: HK G36 HK416 HK...HKP-21364$74.95 -
HK VP9, VP9SK, VP40 Trigger Safety Latch Axle
HKP HK Parts
$3.95Axle For Trigger Safety Latch VP9, VP9SK & VP40 HK German factory part. This pin is the axle pin for the safety latch in the VP trigger. Compatible With: HK VP9 HK VP9 Tactical HK VP40 HK VP40 Tactical HK VP9SKHKP-16778$3.95 -
HK45 Compact, USP Compact Recoil Spring Assembly
H&K Heckler & Koch
$89.95Recoil Spring Assembly Complete With Captive Spring, Buffer, & Guide Rod A must-have spare part for your HK compact .45 pistol. New HK German factory fresh manufacture. Compatible With: HK USP Compact 45 HK USPC Tactical HK45 Compact HK45C TacticalHKP-01457$89.95 -
HK33, HK53, HK93 Recoil Spring
H&K Heckler & Koch
$8.95HK German factory HK 93, 33 & 33K Replacement Recoil Spring Compatible With: HK 93 HK33 HK33K Clones or other custom buildsHKP-02097$8.95 -
HK MP5, MP5F Recoil Rod Assembly - 9mm / 10mm / .40 S&W / .357 SIG
HKP HK Parts
$49.95MP5 F, MP5 40/10 Recoil Spring Rod Assembly Complete - Extra Power This is the correct MP5F or MP5 40/10 Recoil Rod assembly with the proper parts and size. Most commonly used for MP5's that are using +P or +P+ ammunition or any high impulse 9mm. Or for...HKP-17833$49.95 -
HK VP9 Rubber Extractor Plug
H&K Heckler & Koch
$4.95HK VP9 Rubber Extractor Plug This part is the rubber buffer found on the inside of the extractor spring to help keep positive tension on the extractor. It's a must-have repair and replacement item.HKP-01849$4.95 -
Out Of Stock
HK45, HK45 Compact, USP, USP Compact Control Latch
H&K Heckler & Koch
$16.95Control Latch Compatible With: HK USP 9mm HK USP .40 S&W HK USP .45 ACP HK USP Compact 9mm HK USP Compact .40 S&W HK USP Compact .45 ACP HK45, HK45 Tactical HK45 Compact, HK45C Tactical HK Tactical, Elite & Expert ModelsHKP-01174$16.95 -
HK Magazine Release - HK45 & P30, P30L, P30SK
H&K Heckler & Koch
$15.95H&K Magazine Release Compatible With: HK45 HK45 Tactical HK P30, P30S, P30L, P30SK Please Note: This part will not fit pistols other than the ones listed above.HKP-01809$15.95 -
HK416, HK417, MR556, MR762 Forward Assist Plunger Spring
H&K Heckler & Koch
$5.95H&K HK MR556/MR762/416/417 Forward Assist Plunger Spring New HK German manufacture. Compatible With: HK MR556 HK 416 HK MR762 HK 417 HK G28 HK M27HKP-02537$5.95 -
HK MP5F, MP5 40,10 Factory Recoil Spring
H&K Heckler & Koch
$14.95HK German MP5 F 9mm & MP5 40/10 Recoil Spring - New Updated Version New latest HK German manufacture MP5 40/10 replacement recoil spring. Hard to find and a high wear and replacement item. Each spring replaces the MP5F recoil spring for the MP5 9mm...HKP-01061$14.95 -
On Sale
HK MP5, MP5K, AP5 Replacement Kit - Firing Pin and Spring
MKE
Now: $16.95Was: $19.95MKE HK MP5, MP5K, AP5 Steel Firing Pin and Spring Replacement Kit Replacement steel firing pin and spring kit for HK MP5 platforms. Direct-fit parts for repairing or replacing worn firing components in MP5-style bolt assemblies. Includes: Firing...HKP-99344Now: $16.95Was: $19.95 -
HK45, HK45C, USP, USPC Detent Plate - V1, V2
H&K Heckler & Koch
$18.95Detent Plate For V1 & V2 This will provide the safety and decocking functions for both the left and right side selector levers for the HK pistols below. Compatible With: USP Full Size, USPC Pistols in all Calibers 9mm, .357, .40 & .45 HK45...HKP-01171$18.95