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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HK91, G3 Firing Pin - Used
H&K Heckler & Koch
$6.95H&K 91/G3 (7.62x51/.308) Firing Pin - Used Great for spares as this is a common wear item. Compatible With: HK G3 & HK 91, PTR or clone riflesHKP-16710$6.95 -
HK P30 Series Right Slide Release Shorty
H&K Heckler & Koch
$32.95HK P30 Series Right Slide Release Shorty This is a shorter version slide release for the HK, P30, P30L, P30S, P30SK, and P30SKS "Safety" version models. The short models are standard on the P30S and P30SKS models.HKP-02487$32.95 -
Out Of Stock
HK SP5K Mag Release Upgrade Kit - 9mm - Drop In Paddle
HKP HK Parts
$74.95HK SP5K Anti-Rattle Roller Tipped "Paddle" Magazine Release Install Kit No modifications, no refinishing...complete drop-in kit included. New USA made busing for a drop-in install kit for the HK SP5K. This kit will allow any end-user to quickly,...HKP-18192$74.95 -
HK416, MR556, MR762, G36 Extractor Spring
H&K Heckler & Koch
$8.95H&K MR556/MR762/416/G36 (5.56/.223) & (7.62x51/.308) Extractor Spring A must-have replacement wear part and a great item to have on hand. Compatible With: HK G36 HK G36K HK G36C HK SL8 HK MR556 HK 416 HK MR762HKP-00288$8.95 -
Out Of Stock
HK416, MR556, HK417, MR762 Buffer Retainer Spring
USA
$5.95HK MR556/MR762/416/HK417 Buffer Retainer Spring This item is the spring for the buffer retainer that is held in the rear of the lower receiver. Compatible With: HK MR556 HK 416 HK MR762 HK 417HKP-20036$5.95 -
Out Of Stock
HK Trigger Return Spring - Heavy 8.5 lbs
H&K Heckler & Koch
$11.95H&K Heavy 8.5 lbs Trigger Return Spring Also known as the heavy LEM trigger spring for the LEM and TGS conversions. Compatible With: HK USP Full Size 9mm, .40 & .45 HK USP Compact 9mm, .40 & .45 HK Tactical, Elite & Expert All...HKP-02265$11.95 -
Out Of Stock
HK416, MR556, HK417, MR762 Handguard Locking Screw - X Style
H&K Heckler & Koch
$25.95HK416, MR556, HK417, MR762 - Handguard Locking Screw Replacement handguard locking screw that secures the handguard to the upper receiver. This version features the "X" allowing the bolt head or HK sling hood tool to be used for installation or removal...HKP-02680$25.95 -
HK USP 9mm, .40 S&W Complete Recoil Assembly
H&K Heckler & Koch
$79.95New HK USP 9mm & .40 Cal Tactical Recoil Spring With Buffer Assembly - Complete This is a great spare or replacement item to have on hand, it is the factory OEM HK part for Tactical models. Each recoil rod assembly was designed to be used for heavy...HKP-01475$79.95 -
HK USP, P30, HK45 Hammer Spring - Reduced Power - 12 lb.
Lazy Wolf
$9.95Lazy Wolf HK Reduced Power Hammer Spring - 12 lb. An exciting new offering as a joint collaboration from the widely renowned pistol smith Lazy Wolf Guns & HK Parts! This custom spring was designed exclusively by master trigger smith Rick Holm at LWG...HKP-18148$9.95 -
Buttstock Sling Pin - Ambi
H&K Heckler & Koch
$43.95H&K Ambidextrous Stock Sling Pin - Large The ambidextrous sling hook push pin replaces the stock push pin on the rear stock of the HK firearm, to enable the use of an HK sling for both left and right hand use. This part will replace and work on any...HKP-00078$43.95 -
HK P30SK Slim Short Slide Release Lever Set
H&K Heckler & Koch
$89.95HK P30SK Slim/Short Slide Release Lever - German HK HK manufactured P30SK slimline style slide release set. This set replaces the factory P30SK stock slide release set that comes from the factory. The slim style set is shorter and thinner in design for...HKP-18028$89.95 -
HK MP5, HK90 Series Hammer Strut
H&K Heckler & Koch
$9.95H&K G3,91,PTR, 93,33 & MP5, 94 Hammer Strut New HK German Hammer Strut for 90 series rifles and pistols. A perfect spare to have on hand. This is a non-pinned hammer spring shank. Perfect for your HK project or rebuild. Compatible With: The...HKP-15445$9.95