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
HK USP Extractor - Full Size - 9mm / .40 S&W
H&K Heckler & Koch
Now: $49.46Was: $54.95H&K HK USP Full Size 9mm/.40 S&W Extractor New HK German. A great spare & replacement item for your USP 9mm or USP .40 pistol. Compatible With: HK USP 9mm HK USP 40 S&W HK USP Tactical, Expert, EliteNow: $49.46Was: $54.95 -
On Sale
HK MP5SF Bushing Sleeve - Elbow Spring
H&K Heckler & Koch
Now: $5.36Was: $5.95Heckler and Koch replacement distance sleeve for MP5SF elbow spring with roller - Used Features: Precision-machined elbow spring and roller used in traditional roller-delayed trigger packs. Original HK design ensures perfect trigger geometry, smooth...Now: $5.36Was: $5.95 -
On Sale
HK45C, USPC Magazine Floorplate - .45 ACP - 8 Round - Pinky Rest
H&K Heckler & Koch
Now: $11.65Was: $12.95H&K 8 Round HK USPC/45C .45 ACP Floorplate w/ Pinky Res HK factory German, vintage style, all polymer 8 round magazine floor plate with finger rest. This floorplate can become cracked and worn with use and is a great spare part to have on hand. Made...Now: $11.65Was: $12.95 -
On Sale
H&K UMP (.40 S&W/.45 ACP/9mm) Paddle Mag Release
H&K Heckler & Koch
Now: $15.25Was: $16.95UMP Paddle Magazine Release This is a common repair and replacement part as they are easy to break on the UMP lower. Simple and easy to install with no gunsmith needed or required. Compatible With: UMP .45 UMP .40 UMP 9mm Please Note: This...Now: $15.25Was: $16.95 -
On Sale
HK USP Left Side V3 Decocking Lever
H&K Heckler & Koch
Now: $53.96Was: $59.95H&K HK USP Left Side V3 Decocking Lever V3 decock only lever for right-handed operation. German HK V3 lever for full-size USP's. When used along with the V3 - V4 detent plate, it will convert to decock only - no safety. For use with right-handed...Now: $53.96Was: $59.95 -
On Sale
HK45, HK45C, USP, USPC , P2000 Shaped Spring - Slide Release
H&K Heckler & Koch
Now: $8.96Was: $9.95HK Slide Release Spring This is a high-wear item, as it cannot be reused once damaged or removed. It must be replaced with a new spring. Compatible With: HK USP 9mm, .40 & .45 HK USP Compact 9mm, .40 & .45 HK USP Tactical, Elite & Expert...Now: $8.96Was: $9.95 -
On Sale
HK USP Detent Plate Variant 5, 6, 9 & 10
H&K Heckler & Koch
Now: $17.95Was: $19.95HK Detent Plate For USP Variant 5, 6, 9, & 10 Conversions This plate, when installed, will allow you to have the "safety" only and NO decock function on your pistol. This plate will fit and work for both left-hand and right-hand setups. Compatible...Now: $17.95Was: $19.95 -
On Sale
HK Pistol O-Ring - Barrel - .40 S&W
H&K Heckler & Koch
Now: $4.46Was: $4.95New HK German Black .40 Cal Barrel O-ring For All .40 Caliber Threaded Barrels This factory part is a high wear and replacement item as the O-ring provides the seal between the slide and the barrel, which provides a secure lockup and increased accuracy...Now: $4.46Was: $4.95 -
On Sale
HK P7M8, P7M13 Retaining Roll Pin - Gas Piston
H&K Heckler & Koch
Now: $4.46Was: $4.95HK P7 M8, M13 Piston Retaining Roll PinNow: $4.46Was: $4.95 -
On Sale
HK416, MR556 Takedown Pin - Front - A1 Style
H&K Heckler & Koch
Now: $58.46Was: $64.95H&K HK MR556 Front Lower Receiver Locking Pin With Spring Loaded Detent This part is the front (large) takedown pin with ball detent and locking mechanism installed. The idea behind this type of system is to decrease the movement of the upper and...Now: $58.46Was: $64.95 -
On Sale
HKP +7 HK 45C, USPC .45 ACP Magazine Extension
HKP HK Parts
Now: $47.96Was: $59.95HKP +7 HK 45C, USPC .45 ACP Magazine Extension HK Parts magazine extension +7 adds 7 additional rounds to the HK45C, 8 round magazine. Each unit can then be fully assembled into a 15 round HK45C magazine. Ideal for competitive shooters, concealed carry,...Now: $47.96Was: $59.95 -
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