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 VP9, VP40 Grip Panel Left Side - Small - Black
H&K Heckler & Koch
$17.95H&K VP9, VP40 Grip Panel Left Side - Small - Black New HK German manufactured. Left side size small perfect for spare or for custom stippling projects. Drop-in part for your HK VP pistol. Compatible With: HK VP9 HK VP40 HK VP9A1 F HK...HKP-16807$17.95 -
HK VP9, VP9SK, VP40 Firing Pin with Striker
H&K Heckler & Koch
$59.95H&K VP9/VP9SK, HK VP40 Firing Pin w/ Striker New HK German factory firing pin that fits all models of VP series pistols. Compatible With: HK VP9, VP9 Tactical, VP9L, VP9 OR HK VP9SK VP40, VP40 TacticalHKP-16833$59.95 -
HK USP Recoil Spring Washer Retainer - Front
H&K Heckler & Koch
$14.95H&K HK USP Recoil Spring Washer Retainer This is the tapered washer that supports and keeps the recoil spring centered and captive on the recoil rod itself. Compatible With: HK USP 9mm HK USP .40 HK USP .45 HK USP Tactical Models HK Elite, Expert,...HKP-17060$14.95 -
HK Pistol Trigger Axle
H&K Heckler & Koch
$9.95HK Pistol Trigger Axle Compatible With: HK USP 9mm .40 S&W .45 ACP HK USP Compact 9mm .40 S&W .357 SIG .45 ACP HK P30 HK P30L HK P30SK HK P2000 HK P2000SK HK45 HK45 CompactHKP-01806$9.95 -
On Sale
HK MP5, SP5K, HK94, SP89 Thread Protector - 9mm - 1/2x32 RH
H&K Heckler & Koch
Now: $32.95Was: $39.95H&K 9mm Thread Protector - Threaded 1/2x32 RH A great replacement item for lost or damaged thread protectors & caps. This part is compatible with all factory-spec MP5 Navy or MP5KN barrels. Specifications: Overall Length .610" Threaded 1/2x32...HKP-00108Now: $32.95Was: $39.95 -
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 -
HK21E, HK23E, HK11E, HK13E Hammer Spring
H&K Heckler & Koch
$19.95HK German HK21E, 23E, 11E & 13E Hammer Spring - German This is the heaviest HK hammer spring available for the roller lock family of firearms. The factory correct hammer spring for the beltfed series of firearms. Made in Germany and production has...HKP-15453$19.95 -
HK MP5, MP5K, HK93, HK91 Handguard Retainer Screw - Tactical, Keymod, and M-LOK
PTR
$4.95PTR Tactical, Keymod & M-LOK, Retainer Handguard Screw This is the screw that is used on all the Tactical, Keymod, and M-LOK forearms (MP5K, MP5, HK93, HK91). A great spare to have in case the original screw gets lost.HKP-16743$4.95 -
MM Registered Sear Pack - Re-Timed Hammer
Michaels Machines
$168.95MM Registered Sear Pack - Re-Timed Hammer - USA This part is the necessary addition for all registered sear conversions in 9mm, 40/10, 223, and.308 trigger packs. Protect your valuable investment by using the proper re-timed hammer for your sear pack...HKP-00153$168.95 -
$8.95 -
HK USP Buffer Spring
H&K Heckler & Koch
$9.95HK USP Recoil Rod Secondary Buffer Spring This is the spring found under the larger primary recoil spring on the recoil assembly Compatible With: HK USP 45 HK USP 40 HK USP 9mm All HK USP Tactical models HK Elite, ExpertHKP-02470$9.95 -
HK MP5 Magazine Release Lever Spring - 10mm and .40 S&W
H&K Heckler & Koch
$9.95H&K MP5 40/10 Magazine Release Lever Spring The needed spring that fits in the mag release lever and the magwell for the MP5 40/10 series. Made in Germany and no longer offered or made. These units are the latest design with the ground ends for...HKP-18109$9.95