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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Out Of Stock
HK45, USP New Style Hammer Strut
H&K Heckler & Koch
$12.95H&K HK USP/45 New Style Hammer Strut Compatible With: HK USP 45 HK USP 40 HK USP 9mm HK USP Tactical, Elite, Expert HK45 HK45 TacticalHKP-01250$12.95 -
On Sale
HK USC, UMP Extractor - .40 S&W
H&K Heckler & Koch
Now: $49.95Was: $54.95HK German UMP Or USC .40 Extractor New HK German factory OEM part. This is a high wear and replacement item as the .40 cal cartridge has a high impulse that results in an increased occurrence of this extractor wearing out and breakage. A must-have...HKP-00264Now: $49.95Was: $54.95 -
On Sale
HK45, HK45 Compact, P30, P30L Hammer Bearing
H&K Heckler & Koch
Now: $13.95Was: $14.95HK 30, P30L, 45, & 45C Hammer Bearing Compatible With: HK P30 HK P30L HK45 HK45 Compact Please Note: This item does not have the lockout device built in for those that prefer NOT to have the lockout feature.HKP-01800Now: $13.95Was: $14.95 -
On Sale
HK G36, SL8 Firing Pin Retaining Pin, Complete
H&K Heckler & Koch
Now: $10.95Was: $11.95Retaining Pin For Firing Pin Complete With O-Ring Compatible With: HK G36 HK SL8HKP-14050Now: $10.95Was: $11.95 -
On Sale
HK UMP, USC Bolt Catch Pin
H&K Heckler & Koch
Now: $4.95Was: $5.95H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch PinHKP-16517Now: $4.95Was: $5.95 -
On Sale
HK UMP, USC Cocking Lever Support Tube
H&K Heckler & Koch
Now: $17.95Was: $19.95HK UMP & USC Cocking Lever Support TubeHKP-01883Now: $17.95Was: $19.95 -
On Sale
HK Mark 23, SOCOM Firing Pin Block
H&K Heckler & Koch
Now: $32.95Was: $35.95Heckler and Koch Firing Pin Block for Mark 23 and SOCOM This is the real deal and it is plated in nickel and made for the HK Mark 23 and SOCOM models. Compatible With: HK Mark 23 SOCOM ModelsHKP-01579Now: $32.95Was: $35.95 -
On Sale
HK416, MR556 Ejector Retaining Pin
H&K Heckler & Koch
Now: $5.95Was: $6.95H&K Heckler and Koch's Ejector Retaining Pin for your HK416 and HK MR556 This factory HK German part is the pin that holds the ejector in place on the bolt head. Great to have as a spare part. Compatible With: HK416, MR556HKP-00053Now: $5.95Was: $6.95 -
On Sale
HK416, MR556, HK417, MR762 Disconnector Spring - Short
H&K Heckler & Koch
Now: $6.95Was: $6.99Heckler and Koch HK416, MR556, HK417, MR762 Disconnector Spring - Short This is the shorter spring of the 2 found in the trigger assembly. Compatible With: HK416, MR556 HK417, MR762HKP-02675Now: $6.95Was: $6.99 -
On Sale
HK UMP Release Lever
H&K Heckler & Koch
Now: $8.95Was: $9.95HK UMP Catch Release Lever Or Trip Lever For All UMP LowersHKP-01890Now: $8.95Was: $9.95 -
On Sale
HK MP5 Locking Roller -4 - .40 S&W
HKP HK Parts
Now: $10.95Was: $11.95HK US MP540 Undersized Locking Roller, -4 The proper roller size is essential for proper headspacing of bolt gap. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to remember the size you need...HKP-17561Now: $10.95Was: $11.95 -
HK P7 Series Button Spring - Slide Removal
H&K Heckler & Koch
$7.95HK P7 Series Slide Removal Button Spring This item is no longer in production. Get it while it's still available. Compatible With: PSP P7M8 P7M10 P7M13HKP-01314$7.95