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 Semi Auto Shelf for Receiver - Billeted
HKP HK Parts
$17.95HKP Semi Auto Shelf for Receiver - Billeted HK Semi Auto Shelf, Hanger Block to HK's factory specifications for c/p trigger housings. Weld on shelf that is the needed receiver block that welds to the rearward portion of the magwell to allow the use of...HKP-21470$17.95 -
HK UMP, USC Stock Axle Pin
Other
$14.95Heckler and Koch Stock Rear Stock Axle Pin for your HK UMP or USC This is the stock pin that allows you to attach the stock to either the factory receiver of a UMP or for those who are doing the USC to UMP conversion. This pin is required to attach the...HKP-02591$14.95 -
HK MP5, HK94, MP5K, SP89 Firing Pin - Steel
HKP HK Parts
$17.47MP5, MP5K, 94, & SP89 Firing Pin - Steel Each part is made using the factory HK material and specifications from original HK German blueprints. Compatible With: MP5, HK94 MP5K, SP89, SP5K MP5 40, 10mm, .357 Sig Zenith, POF, Omega, DT,...HKP-02115$17.47 -
Out Of Stock
HK416A5, MR556 A4 Bolt Catch, Release - Enhanced - Ambi
H&K Heckler & Koch
$64.95HK German Enhanced Ambidextrous HK416 A5 Bolt Release Factory HK ambidextrous magazine paddle catch/release. Compatible With: HK416A5 HK MR556 A4HKP-19463$64.95 -
Out Of Stock
HK MP5, MP5K Extractor - 9mm - US
RCM
$29.95RCM MP5 & MP5K 9mm Extractor Made from ordnance grade steel and heat treated. These are the latest F type extractor for all HK MP5/94 bolt heads. Perfect to get that out of spec clone or worn out HK bolt working as it should. Made in the USA, these...HKP-20959$29.95 -
HK MP5, HK90 Series Push Pin Spring
$1.95Replacement Spring for HK style push pin - Small A must have replacement item 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...HKP-20368$1.95 -
Out Of Stock
HK Roller +8 - New - 8.08mm
HKP HK Parts
$8.99Roller +8 - New - 8.08mm HK Parts Standard (8.08 mm) locking roller, The proper roller size is essential for proper bolt gap. US Manufacture. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to...HKP-19437$8.99 -
HK USPC, P2000 Magazine Floorplate - 9mm - 13 Round - Pinky Rest - Rubberized
H&K Heckler & Koch
$19.9513 Round USPC & P2000 9mm Magazine Floor Plate w/ Pinky Rest This part is the new style floor plate that is rubberized to resist breakage when the magazine is dropped. Compatible With: HK USPC 9mm 13-round magazines HK P2000 9mm 13-round...HKP-02648$19.95 -
HK MP5, HK33 HK53, HK93 Paddle Mag Release Bushing - Full Auto
H&K Heckler & Koch
$6.95Heckler and Koch New Full Auto Paddle Magazine Release Bushing for HK MP5 and HK90 New HK German paddle magazine release bushing for all 90 series HK weapon systems. Used for installing a paddle mag release. Please Note: This is NOT for use on...HKP-00847$6.95 -
HK VP9, VP9SK, VP40 Trigger Spring
H&K Heckler & Koch
$3.95H&K HK VP9/VP9SK, HK VP40 Trigger Return Spring HK German stock trigger return spring. A must have spare part as the factory spring will wear with use. The TRS can also be damaged upon install if the spring tool is not used to install. Please order...HKP-16783$3.95 -
HK MP5, MP5K F Style Roller Retainer Plate - 3rd Gen
H&K Heckler & Koch
$14.95HK German "F" Style 3rd Gen Roller Retainer Plate This is the latest and greatest German design of roller retainer plates found in all of the latest production of HK German bolt heads. The MP5 F roller retainer plate fits true F-style bolt heads only...HKP-00069$14.95 -
HK90 Series Trigger and Catch Axle
H&K Heckler & Koch
$1.99HK Sear & Trigger Axle For 90 Series- Used Surplus Condition HK German used sear and trigger axle for the 90 series style of trigger packs. Each axle pin or pivot pin measures .197 inches (5.0mm). A great spare and must have spare part for anyone...HKP-15459$1.99