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
HKP HK G3,91,PTR, 93,33 & MP5, 94 Pinned Hammer Strut
HKP HK Parts
Now: $11.16Was: $13.95HKP HK G3,91,PTR, 93,33 & MP5, 94 Pinned Hammer Strut New USA hammer strut for 90 series rifles and pistols. A perfect spare to have on hand. This is a pinned hammer spring shank. Perfect for your HK project or rebuild. Compatible With: HK trigger...Now: $11.16Was: $13.95 -
On Sale
HK USP Series Firing Pin Block Spring - Old Style
H&K Heckler & Koch
Now: $8.96Was: $9.95HK USP Series Old Style Firing Pin Block Spring In order to use the new firing pin block spring, you also have to upgrade the firing pin, firing pin block, as well as the firing pin block spring. HK part #214192 has been replaced with...Now: $8.96Was: $9.95 -
On Sale
HK416, MR556 Firing Pin
H&K Heckler & Koch
Now: $49.46Was: $54.95H&K HK MR556/416 Firing Pin New HK German manufactured. This is a great item to have on hand as the firing pin is one of the most abused components in the HK MR556 and HK 416 weapon systems. Compatible With: HK MR556 HK 416 HK CR556 HK...Now: $49.46Was: $54.95 -
On Sale
HK VP9, VP9SK, VP40 Trigger Stop Bolt
H&K Heckler & Koch
Now: $13.46Was: $14.95H&K HK VP9/VP9SK, VP40 Trigger Stop Bolt Stop Bolt for Trigger VP9, VP40. Compatible With: HK VP9 HK VP9SK HK VP40 HK VP9A1 F HK VP9A1 KNow: $13.46Was: $14.95 -
Out Of StockOn Sale
HK416, MR556 Ejection Port Cover Door Assembly
H&K Heckler & Koch
Now: $80.95Was: $89.95HK German HK 416, MR556 Ejection Port Cover Door Assembly Complete This is the newer polymer style cover found on the latest HK 416 and MR556's. This is the complete ejection port door assembly needed on all AR15 or MR556/HK416 models. Can also be used...Now: $80.95Was: $89.95 -
On Sale
HK G36, SL8, MP7 Gas Block Pin
H&K Heckler & Koch
Now: $8.05Was: $8.95H&K HK G36/SL8/MP7 Gas Block Pin The G36/SL8/MP7 gas block pin is the largest out of HK's line up (UMP/USC, 415/MR556, 417/MR762).Now: $8.05Was: $8.95 -
On Sale
HK MP5, HK94 Grip Adapter - K Style
HKP HK Parts
Now: $39.96Was: $49.95HK Vertical K Grip Adapter For HK MP5 & HK94 (Adapter Only) This is the adapter needed to add an MP5K K grip to your HK94, MP5, or clone.Now: $39.96Was: $49.95 -
On Sale
HK416 Retaining Pin - Firing Pin - Enhanced
H&K Heckler & Koch
Now: $17.95Was: $19.95HK 416 Firing Pin Retaining Pin- New Style This part is the newer style pin that is goldish, super hardened, and much less prone to wear and tear. The enhanced version is the most robust, easiest-to-use pin available. Compatible With: HK 416 AR15, M4...Now: $17.95Was: $19.95 -
On Sale
HK SP5K 9mm Drop In Paddle Mag Release Upgrade Kit
H&K Heckler & Koch
Now: $116.95Was: $129.95German HK SP5K Anti-Rattle Roller Tipped Paddle Magazine Release Kit No modifications, no refinishing...complete drop-in kit included New HK German & USA made paddle mag release kit for the HK SP5K. This kit will allow any end-user to quickly...Now: $116.95Was: $129.95 -
On Sale
HK Ambidextrous Sling Pin Locking Knob
H&K Heckler & Koch
Now: $10.75Was: $11.95New HK German Ambidextrous Sling Pin Locking Knob These are common replacement items, they can become loose as the O-ring wears and falls off. Be sure to order extra O-rings to avoid losing the locking nut. This is a common replacement part for those...Now: $10.75Was: $11.95 -
On Sale
B&T Ambidextrous Sling Pin - Small
B&T Brugger & Thomet
Now: $53.06Was: $58.95B&T Ambidextrous Sling Pin - Small Replaces the small push pin to allow a sling attachment point on either the left or right side of the firearm. Each measures: 6x29mm with rubber o-ring and net screw.Now: $53.06Was: $58.95 -
On Sale
HK P30SK Safety Pin - Firing Pin
H&K Heckler & Koch
Now: $4.46Was: $4.95H&K HK P30SK Firing Pin Safety Pin This is a factory original HK part manufactured in Germany.Now: $4.46Was: $4.95