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
HK45, USP Spring - Firing Pin
H&K Heckler & Koch
Now: $7.16Was: $7.95H&K HK USP/45 Firing Pin Spring Compatible With: HK USP 9mm HK USP 40 HK USP 45 HK USP Tactical models HK USP Expert, HK Elite HK45, HK45 TacticalNow: $7.16Was: $7.95 -
On Sale
HK MP5 Replacement Buffer For Folding Stock Or End Cap
Choate
Now: $3.56Was: $3.95Choate MP5 Replacement Buffer For Folding Stock Or End Cap Compatible With: Choate MP5 and MP5K Stocks or End Caps (NOT compatible with MP5 .22 LR)Now: $3.56Was: $3.95 -
On Sale
HK USP, USP, VP40 Extractor Spring
H&K Heckler & Koch
Now: $5.36Was: $5.95H&K USP/USPC/VP40 Extractor Spring The extractor spring is one of the hardest working parts of your HK pistol. The extractor spring should be changed every 5K rounds. A must-have spare part to have on hand. Compatible With: HK USP 9, 40 .45...Now: $5.36Was: $5.95 -
Out Of StockOn Sale
HK MP5SD Sealing Ring
H&K Heckler & Koch
Now: $26.95Was: $29.95H&K MP5SD Sealing Ring Each HK MP5SD sealing ring is the sealing gasket that seals the SD suppressor against the trunnion on factory HK MP5SD's or factory correct SD conversions. This is a typical wear item as they do degrade and crack. Compatible...Now: $26.95Was: $29.95 -
On Sale
HK Roller Type Trip Lever
H&K Heckler & Koch
Now: $26.95Was: $29.95H&K Roller Type Trip Lever This is a genuine German Heckler & Koch part. This is the newer style trip lever for use with a roller sear catch, not the older friction type. Please Note: May or may not be marked with the X or XX...Now: $26.95Was: $29.95 -
On Sale
HK45, P30, USP Block - New Style Firing Pin
H&K Heckler & Koch
Now: $15.25Was: $16.95H&K USP/P30/HK45 New Style Firing Pin Block A factory Heckler and Koch part. Compatible With: HK USP 45, 40 & 9mm HK USP Tactical, Elite, Expert HK USP Compact 9mm, .40 & .45 HK USPC Tactical 9mm, .40 & .45 HK P30, P30L, P30S &...Now: $15.25Was: $16.95 -
On Sale
HKP Roller +1 - New - 8.01mm
H&K Heckler & Koch
Now: $8.09Was: $8.99Roller +1 - New - 8.01mm HK Parts Standard (8.01 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...Now: $8.09Was: $8.99 -
On Sale
HK45, USP, P30, P2000 Stock Hammer Spring - 12LB
H&K Heckler & Koch
Now: $5.36Was: $5.9512LB Stock Hammer Spring This is the spring used in some custom trigger jobs, along with other trigger return and firing pin block springs. This spring can be used on the P30 along with the light trigger return spring and light firing pin block...Now: $5.36Was: $5.95 -
On Sale
HK VP9, VP9SK, HK VP40 Locking Block Pin
H&K Heckler & Koch
Now: $9.86Was: $10.95H&K HK VP9/VP9SK, HK VP40 Spring Pin, Dowel Pin For Locking Block HK German manufacture. A special spring pin that has an internal spring for support. A must have item as this roll pin can become damaged with install and removal. Compatible...Now: $9.86Was: $10.95 -
On Sale
HK Retaining Ring - Flash Hider
H&K Heckler & Koch
Now: $1.34Was: $1.49HK Flash Hider Retaining Ring Brand new HK German manufacture. HK flash hider, muzzle break retaining ring. This item is the ring that fits inside the flash hider that indexes with the splines of the HK barrel to provide a positive lockup of...Now: $1.34Was: $1.49 -
On Sale
HK Rod Rivet - Recoil Guide - Used
H&K Heckler & Koch
Now: $0.43Was: $0.48H&K German Recoil Guide Rod Rivet-Used This rivet holds the stop pin and recoil spring captive and in place to the recoil rod itself. Compatible With: G3, 91, 33, 93, 53 MP5, 94 MP5K SP89 HK21 variantsNow: $0.43Was: $0.48 -
On Sale
HK P30 Series Left Slide Release Shorty
H&K Heckler & Koch
Now: $58.46Was: $64.95HK P30 Series Left Slide Release Shorty This is the left side of the frame shorter slide release lever for the HK P30, P30L & P30SK version models. This shorter slide release lever is also the standard lever found on the P30S & P30SK models...Now: $58.46Was: $64.95