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 Set
H&K Heckler & Koch
$184.95H&K Magazine Release Set This is the complete magazine release kit that includes both the paddle mag release and standard left-to-right mag release on your HK 9mm rifle or pistol build. Compatible With: MP5, MP5K style 9mm models Set...$184.95 -
HK SP5K, MP5K Cocking Tube Support Spring - Reverse Stretch
H&K Heckler & Koch
$6.95Heckler and Koch HK SP5K, MP5K Reverse Stretch Cocking Tube Support Spring A great spare to have on hand as this part can become worn and be lost. The cocking tube support spring applies pressure to the cocking tube detent to enable to the detent to lock...$6.95 -
HK416 Ejection Port Axle
H&K Heckler & Koch
$4.95Ejection Port Axle - Steel- HK 416 New HK USA manufacture for the HK 416 family of firearms. This is the axle that holds the ejection port cover in place on the upper receiver.$4.95 -
HK416, HK417, MR556, MR762 Bolt Catch Spring
H&K Heckler & Koch
$6.95H&K HK MR556/762/416/417 Bolt Catch Spring Compatible With: HK MR556 HK 416 HK MR762 HK 417$6.95 -
Out Of Stock
HK416, MR556 Magazine Catch
H&K Heckler & Koch
$50.95H&K HK MR556/416 Magazine Catch New HK German manufacture magazine catch for the HK 416 and MR556 family of firearms. Compatible With: HK MR556 HK 416$50.95 -
HK416, MR556, MR762 Forward Assist Assembly
H&K Heckler & Koch
$74.95H&K HK MR556/MR762/416 Forward Assist Assembly H&K Germany factory MR556 & HK416 forward assist assembly complete. Compatible With: HK MR556 HK 416 HK MR762$74.95 -
HK UMP, USC Firing Pin - Complete Assembly - .40 S&W / .45 ACP / 9mm
H&K Heckler & Koch
$82.95HK German USC & UMP Firing Pin Assembly Complete A great spare to have on hand as this item is a hard-to-find replacement part. Compatible With: USC 45 UMP 45 UMP 40 UMP 9mm ALL USC Conversions ALL UMP MG's$82.95 -
HKMP5, MP5K, HK91, G3, HK33 Cocking Tube End Cap Spring
H&K Heckler & Koch
$4.95H&K Cocking Tube End Cap Spring Fits all German, Contract & US made cocking tube end caps. A great spare to have on hand as this part can become worn and be lost. The cocking tube end cap spring applies pressure to the cocking tube end cap/dust...$4.95 -
HK VP9, VP9SK, VP40 Left Side Slide Release Lever
H&K Heckler & Koch
$19.95H&K HK VP9/VP9SK, VP40 Left Side Slide Release Lever - Black New HK VP series German left side slide release lever for slide. Compatible With: HK VP9, VP9L HK VP9SK HK VP9A1 F HK VP9A1 K HK VP40$19.95 -
HK VP9, VP9SK, VP9 Match, VP9 Tactical, VP40, VP40 Tactical Magazine Release/Catch
H&K Heckler & Koch
$24.95H&K HK VP9/VP9SK/VP9 Match/Tactical, HK VP40/Tactical Magazine Release/Catch New HK German manufacture. Compatible With: HK VP9, VP9 Tactical HK VP9SK HK VP40, VP40 Tactical$24.95 -
HK USP Magazine Locking Plate - 9mm / .40 S&W - High Capacity
H&K Heckler & Koch
$6.95HK USP 9mm / .40 S&W High Capacity Magazine Locking Plate Compatible With: HK USP 9mm HK USP .40$6.95 -
HK VP9, VP9SK, VP40 Elbow Spring, Drop Safety
H&K Heckler & Koch
$6.95H&K HK VP9/VP9SK, VP40 Drop Safety Elbow Spring Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP9SK HK VP40$6.95