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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On Sale
HK MP5, SP5K Firing Pin Spring
H&K Heckler & Koch
Now: $8.95Was: $9.95HK Heckler & Koch HK94, MP5 Spring - Firing Pin German Fits all of the MP5, SP5, SP5K, MP5K 9mm and 40/10 Variants including MP5, 94 clones. The firing pin is one of the most common repair and replacement items. Compatible With: MP5, MP5K SP5,...HKP-00062Now: $8.95Was: $9.95 -
On Sale
HK MP5, HK94 Recoil Spring
H&K Heckler & Koch
Now: $11.95Was: $12.95HK German MP5, HK94 Recoil Rod Assembly Spring Great replacement and spare recoil spring as this is a common repair and replacement item. Compatible With: HK MP5 HK94 Zenith, POF, AA Clones & custom buildsHKP-01652Now: $11.95Was: $12.95 -
On Sale
HK MP5 A3 Telescopic Stock Buffer - USA
Now: $6.95Was: $7.74MP5 A3 Retractable Stock "H" Buffer For All HK A3 Retractable Stocks The A3 stock buffer is a high-wear and replacement item that needs replacement when torn, cracked, brittle, discolored, and worn. These units are from the same material and durometer as...HKP-14012Now: $6.95Was: $7.74 -
On Sale
HK416, MR556 Gas Block Roll Pin
H&K Heckler & Koch
Now: $4.95Was: $5.95Heckler and Koch Gas Block Pin for HK416 and MR556 This is the retaining pin for an HK416 gas block. A must-have, as HK recommends using new pins once they are removed or damaged. Size: 5 x 18 mm.HKP-02534Now: $4.95Was: $5.95 -
On Sale
HK USP, P2000SK, HK45CT Match Trigger Return Spring
H&K Heckler & Koch
Now: $7.95Was: $8.95HK Pistol Match Trigger Return Spring This is the TRS that is in the Match trigger kit. This spring works better with the SA/DA and is lighter than the standard trigger return spring. This is a great spare part to have on hand...HKP-02666Now: $7.95Was: $8.95 -
On Sale
HK 90 Series Pistol Grip Parts Storage Holder
HKP HK Parts
Now: $25.95Was: $29.95HK Pistol Grip Parts Storage Holder - SEF & Ambidextrous Housings A must-have item for storage, it doesn't have a battery compartment to maximize storage. This HK grip plug will fit all SEF or Ambidextrous housings that have the holding tabs in the...HKP-19452Now: $25.95Was: $29.95 -
On Sale
HK VP9, VP40 Magazine Release - Enhanced - Gen 2
HKP HK Parts
$42.95 - $44.95Enhanced Magazine Release - Alloy - HK VP Series - Gen 2 - New & Improved The oversized magazine release increases the overall surface area and makes it possible to release the magazine without changing the position of your grip. Made in the...HKP-21098-M$42.95 - $44.95 -
On Sale
HK VP9, VP9SK Slide Cap - Enhanced
HKP HK Parts
Now: $25.95Was: $29.95Enhanced Slide Plate Cover VP9, VP9 Tactical, VP9SK & VP40 Enhanced HK VP9, VP40 Alloy Slide Plate. This enhanced model cover has no firing pin viewing window and is machined to cover as MUCH surface area as possible to seal the firearm from dirt...HKP-17856Now: $25.95Was: $29.95 -
On Sale
HK MP5, HK94 Firing Pin Spring - Enhanced
HKP HK Parts
Now: $3.95Was: $4.95MP5 & HK94 Firing Pin Spring - Enhanced The "Enhanced" firing pin spring was analyzed and engineered from scratch with the latest in performance spring technology and an emphasis on reducing stress on the spring and increasing cycle life by 500%...HKP-02321Now: $3.95Was: $4.95 -
HK Oversized Barrel Retaining Pin - 5.25mm
H&K Heckler & Koch
$9.95H&K Oversized Barrel Retaining Pin - 5.25mm This is the barrel pin used for installing a new or replacement barrel. HK suggests using a new factory barrel pin when installing or reinstalling an HK barrel in the trunnion. Each pin is slightly...HKP-16954$9.95 -
On Sale
HK MP5, MP5K, G3, HK93 Paddle Magazine Release - Extended - EMR
HKP HK Parts
Now: $35.95Was: $44.95HKP HK Parts Paddle Style Extended Magazine Release with EMR for HK MP5, HK G3, HK 33 and more A great addition to any paddle style mag release, such as those found on an HK. The extended mag release is machined from a solid billet of aircraft grade...HKP-17079Now: $35.95Was: $44.95 -
On Sale
HK VP9, VP9SK, VP40 Enhanced Support Sleeve
HKP HK Parts
$12.95 - $17.95HKP HK VP9/VP40 Enhanced Support Sleeve The support sleeve in the VP series pistols is a crucial component that allows for the removal of the slide plate, firing pin assembly, and other parts. The factory version is made from polymer, which can wear down...HKP-18677-M$12.95 - $17.95