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 Magazine Release Lever Spring - .40 S&W, 10mm
H&K Heckler & Koch
$9.95HK Heckler and Koch Magazine Release Lever Spring for HK MP5 .40 S&W and 10mm 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...HKP-18109$9.95 -
HK UMP Magazine Locking Plate - .45 ACP
H&K Heckler & Koch
$9.95H&K UMP (.45 ACP) Magazine Locking PlateHKP-16338$9.95 -
HK P30, P2000, USP Block Spring - Heavy Firing Pin
H&K Heckler & Koch
$5.95HK P2000 & P30 Heavy Firing Pin Block Spring This is the heavy LEM spring found on the LEM conversion. Compatible With: Any post-2005 production USP & UPSC P2000 P2000SK P30 P30SK Will fit the HK45 & HK45C modelsHKP-01603$5.95 -
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 -
HK G36, UMP Folding Stock Release Spring
H&K Heckler & Koch
$9.95HK G36 Folding Stock Release Spring This is the spring that fits under the stock release button to activate the folding and retention of the G36 or UMP stock. Compatible With: HK G36 HK G36K HK G36C UMPHKP-00637$9.95 -
On Sale
HK VP9, VP9SK, VP40 Enhanced Support Sleeve - Green
HKP HK Parts
Now: $7.75Was: $14.96Enhanced Support Sleeve VP9, VP9SK & VP40 - Aluminum Alloy - Green A must-have upgrade part for the VP series of pistols! The support sleeve is found in the VP slide and is the part that depresses to allow you to remove the slide plate, firing pin...HKP-19631Now: $7.75Was: $14.96 -
HK Mark 23 Firing Pin Spring
H&K Heckler & Koch
$8.95HK Mark 23 Firing Pin Spring Compatible With: HK Mark 23 SOCOMHKP-01627$8.95 -
HK Mark 23 Extractor Spring
H&K Heckler & Koch
$9.95Extractor Spring For HK Mark 23 Or SOCOM Pistol New HK German factory nickel-plated extractor spring. A great spare to have on hand and one of the highest wear and replacement parts on the Mark 23. Compatible with all models and years of the Mark 23...HKP-01430$9.95 -
HK416, MR556, MR762 Extractor Spring Buffer
H&K Heckler & Koch
$14.95H&K HK MR556/MR762/416 Extractor Spring Buffer This buffer fits inside the extractor spring in the extractor pocked of the bolt. This item is a high wear item and a spare would be highly advised. Compatible With: HK MR556 HK 416 HK MR762HKP-00051$14.95 -
HK MP5F, MP5 40/10 Recoil Rod Assembly - Complete
H&K Heckler & Koch
$79.95German HK MP5F Recoil Assembly This is the factory-correct MP5F or MP5 40/10 Recoil Rod assembly. Most commonly used for MP5's that are using +P or +P+ ammunition or any high impulse 9mm. Or for all MP5 40 or 10-mm bolt groups. A great upgrade to have...HKP-00133$79.95 -
HK33, HK53, HK93 Push Pin Spring
MKE
$3.95MKE HK33, HK53, HK33 Push Pin Spring A must have replacement spring to have on hand. A quick and easy install spring to get your push pins back to working condition. A great replacement for those worn out springs that come loose while in action...HKP-22228$3.95 -
HK MR762 A4 Gas Vent Screw - 1.0mm-2.5mm
H&K Heckler & Koch
$29.95Heckler and Koch MR762 A4 Gas Vent Screws German gas vent screw for MR762 A4 gas block. Specifications: Factory reference: 1.3mm is the common factory vent screw size for MR556 A4 Sizing reminder: Larger mm equals more venting, Smaller mm...HKP-21954-M$29.95