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 MP7 Piston Ring
H&K Heckler & Koch
$9.95HK German MP7A1 Piston Ring For Gas Piston New HK German MP7 piston ring. A high wear & tear item. Works on all HK MP7 models. Each ring is sold individually. 3X are needed for each piston. We suggest ordering 3 and swapping them all at the same time.$9.95 -
Out Of Stock
HK Barrel Retaining Pin - 5.15mm
H&K Heckler & Koch
$14.95H&K Barrel Retaining Pin - 5.15mm 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 oversized for...$14.95 -
HK416, MR556 Ejection Port Spring
H&K Heckler & Koch
$9.95H&K HK MR556/416 Ejection Port Spring Compatible With: HK MR556 HK 416$9.95 -
HK45, HK45 Compact, USP, USP Compact LEM Cocking Piece Elbow Hammer Rebound Spring
H&K Heckler & Koch
$9.95HK LEM Cocking Piece Elbow Hammer Rebound Spring This item is a common wear and replacement item for those who have LEM triggers installed. Compatible With: USP USPC HK45 HK45C$9.95 -
HK VP9, VP9SK, VP40 Safety Clamp
H&K Heckler & Koch
$9.95H&K HK VP9/VP9SK, VP40 Safety Clamp - Black Genuine H&K safety clamp. Compatible With: HK VP9 HK VP9SK HK VP40 HK VP9A1 F HK VP9A1 K$9.95 -
On Sale
HK MP5 Hammer Axle
MKE
Now: $1.98Was: $2.99MKE HK MP5 Hammer Axle MKE Hammer axle for the 90 series style of trigger packs. Each axle pin or pivot pin measures .237 inches (6.0mm). A great spare and must have spare part for anyone that owns an HK 90 series of firearm or trigger packs. Compatible...Now: $1.98Was: $2.99 -
Out Of Stock
HK VP9, VP9SK, HK VP40 Disassembly Safety
H&K Heckler & Koch
$13.95Dismounting Or Disassembly Safety HK VP9, VP40 Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP9SK HK VP40$13.95 -
HK45, HK45 Compact USP Detent Compression Spring
H&K Heckler & Koch
$5.95HK Slide Detent Compression Spring For All HK USP & HK45, HK45C Models The detent spring is needed for positive de-cocking and safety functions of the detent plate. A spare and replacement part as it is prone to breakage and wear. This is also one of...$5.95 -
HK416, HK417, MR556, MR762 Detent Takedown Pin
H&K Heckler & Koch
$9.95H&K HK MR556/MR762/416/417 Detent Takedown Pin Factory H&K takedown pin for MR556 A4. Compatible With: HK MR556 HK 416 HK MR762 HK 417$9.95 -
HK P7 Series Detent Spring - Piston Plunger
H&K Heckler & Koch
$7.95HK P7 Series Piston Plunger, Detent Spring Compatible With: PSP P7M8 P7M10 P7M13$7.95 -
HK416, MR556, MR762 Bolt Catch Pin
H&K Heckler & Koch
$4.95H&K HK MR556/MR762/416 Bolt Catch Pin The factory roll pin is used to hold the bolt catch in place. Great to have on hand in the event this item becomes lost or damaged when doing maintenance Compatible With: HK MR556 HK 416 HK MR762$4.95 -
HK90 Series Compression Spring for Shifter Rod on Burst Trigger Packs
H&K Heckler & Koch
$10.95H&K Burst Trigger Pack Compression Rod Spring Burst pack compression spring for compression rod found in all HK Burst Trigger Packs. This part, along with the compression rod, is the number one most common wear or breakage parts in HK Burst Packs...$10.95