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
HK416, MR556 Ejection Port Cover - FDE
H&K Heckler & Koch
Now: $53.96Was: $59.95HK German HK 416, MR556 Ejection Port Cover In FDE HK manufactured newer polymer style cover assembly found on the latest HK 416 & MR556's. This item can also be used on other AR15 style projects to enhance the build with the finest ejection port...Now: $53.96Was: $59.95 -
On Sale
HK P30 Series Magazine Release - Enhanced
HKP HK Parts
Now: $39.96Was: $49.95Enhanced Magazine Release - Alloy - HK P30, P30SK, P30L New HK Parts Enhanced and Over-sized Magazine Release. The oversized magazine Release increases the overall surface area and makes it possible to release the magazine without changing the...Now: $39.96Was: $49.95 -
On Sale
HK Trip Lever- Friction - Used - Surplus
H&K Heckler & Koch
Now: $3.37Was: $3.74H&K Trip Lever- Friction - Used - Surplus HK German trip lever for HK F/A or registered sear trigger packs in used surplus condition. This is the older friction style trigger pack found on older HK trigger packs and all HK registered sear packs.Now: $3.37Was: $3.74 -
On Sale
HK Pistol O-Ring - .40 S&W Green
H&K Heckler & Koch
Now: $4.46Was: $4.95O-ring for .40 caliber barrels Features: Original green color no longer in production Same high-temperature rubber as the newer black O-rings Factory part that provides the seal between the slide and the barrel Provides a secure lockup and increased...Now: $4.46Was: $4.95 -
On Sale
HP Roller +5 - New - 8.05mm
HKP HK Parts
Now: $7.19Was: $8.99Roller +5 - New - 8.05mm HK Parts Standard (8.05 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: $7.19Was: $8.99 -
On Sale
HK MP5, SP5K, HK94, SP89 Magazine Catch - 9mm - Latest Style
H&K Heckler & Koch
Now: $58.46Was: $64.95H&K Magazine Catch - Latest Style Genuine HK mag release for factory and clone firearms. This component often resolves issues with mags not locking into position on HK clones and builds. Constructed from a single piece of steel unlike the...Now: $58.46Was: $64.95 -
On Sale
HK MP5, HK53 Locking Roller for Bolt Head - 9mm - 8.02mm
H&K Heckler & Koch
Now: $35.96Was: $39.95H&K +2 Roller For Bolt Head 8.02mm - Over-sized New HK standard (8.02 mm) locking roller. The proper roller size is essential for a proper bolt gap. New HK German, not surplus or used out-of-spec part. Please Note: The price listed is per roller...Now: $35.96Was: $39.95 -
On Sale
HK45, P30, P2000 Backstrap Roll Pin
H&K Heckler & Koch
Now: $5.36Was: $5.95HK P30, 45, & P2000 Backstrap Roll Pin This is the commonly replaced roll pin for the rear backstrap that you can swap and change to different sizes. Great spare to have on hand when doing maintenance on your HK pistol. HK suggests...Now: $5.36Was: $5.95 -
On Sale
HK MP5 .22 Sling Clip Kit
HKP HK Parts
Now: $19.96Was: $24.95HKP HK MP5 .22 Sling Clip Kit Each unit will fit all models of the MP5 .22 that have the 3 mounting holes on the left side of the magwell. This item installs in a few mins and comes complete with all you need for the install. With the addition of this...Now: $19.96Was: $24.95 -
On Sale
HK P7 Series Pistol Grip Screw
H&K Heckler & Koch
Now: $8.05Was: $8.95H&K HK P7 Series Grip Screw HK German P7 series factory grip screw for the left or right side grip. The grip screw commonly strips out or can lose it's new finish with use. This part is a great spare to have on hand. Compatible...Now: $8.05Was: $8.95 -
On Sale
HK MP5, HK94 Pin - Firing
H&K Heckler & Koch
Now: $44.96Was: $49.95H&K MP5, HK94, MP5K, SP89 & SP5K Firing Pin - German Compatible With: MP5 HK94 MP5K SP89 SP5KNow: $44.96Was: $49.95 -
On Sale
HK91, G3 Spring - Firing Pin
H&K Heckler & Koch
Now: $8.96Was: $9.95HK German HK G3, HK91, & PTR Firing Pin Spring This is a common repair and replacement item and is great for spares as this is a common breakage part.Now: $8.96Was: $9.95