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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HK416, MR556 Charging Handle Roll Pin
H&K Heckler & Koch
$7.95HK Heckler and Koch Clamping Sleeve or Roll Pin for Pawl on Charging Handles This is the longer one that is used on the outside of the charging handle. There are one of these pins used per charging handle.HKP-17063$7.95 -
On Sale
HK91, G3 Magazine Catch - Used
H&K Heckler & Koch
Now: $15.95Was: $16.95Heckler and Koch Magazine Catch, USED for HK91, HK G3, and PTR91 The highest quality magazine catch available. High quality HK German production units are slightly used HK Parts from Heckler and Koch Germany. These also have the proper cut in them and do...HKP-18693Now: $15.95Was: $16.95 -
On Sale
HK45 Series, P30 Series Grip Pin - Cylindrical
H&K Heckler & Koch
Now: $4.95Was: $5.95H&K P30 & 45 Series Cylindrical Grip Pin Compatible With: HK 45 HK 45 Compact HK P30 HK P30 V2 HK P30 V3 HK P30L HK P30L V2 HK P30L V3HKP-01808Now: $4.95Was: $5.95 -
On Sale
HK MP7 Compression Spring
H&K Heckler & Koch
Now: $4.95Was: $5.95H&K HK MP7 Compression SpringHKP-16782Now: $4.95Was: $5.95 -
On Sale
HK417, MR762, G28 Ejection Port Cover Axle Spring
H&K Heckler & Koch
Now: $8.95Was: $9.95H&K HK MR762/417/G28 Ejection Cover Axle Spring New Hk German manufacture for the MR762 & HK 417 firearm. The spring is used on the axle and ejection port cover door to allow it to be closed and spring open. Compatible With: HK MR762 HK 417 HK...HKP-16753Now: $8.95Was: $9.95 -
On Sale
HK45, HK45T Firing Pin - Titanium
HKP HK Parts
Now: $42.95Was: $49.95Firing Pin HK45 & HK45 Tactical - Titanium - Grade 6 A solid billet CNC offering at 40+% lighter than comparable steel firing pins. Our titanium firing pins travel faster in the slide, delivering a quicker lock time & enhancing accuracy. Titanium...HKP-17811Now: $42.95Was: $49.95 -
On Sale
HK45 Compact, USP Compact, P30 Recoil Spring Washer Retainer
H&K Heckler & Koch
Now: $8.95Was: $9.95New HK German Recoil Spring Washer Retainer This is the retaining washer that holds the spring captive on the end of the recoil assembly and pushes against the recoil spring. Compatible With: All USP Compact models P2000 P30 HK45 HK45CHKP-01594Now: $8.95Was: $9.95 -
On Sale
HK UMP Magazine Floorplate
HKP HK Parts
Now: $6.95Was: $7.95HKP HK UMP Floorplate Compatible With: UMP .45 UMP .40 UMP 9mm These can become cracked or broken with use or drops onto hard surfaces. Made in the USA and counts as 1 US compliant part.HKP-17161Now: $6.95Was: $7.95 -
Out Of Stock
HK UMP, USC Extractor - .45 ACP
$39.95HK UMP & USC .45 Extractor Perfect for spares as they are prone to breakage and are a common wear item. Please Note: HK considers this a high wear and replacement item. Once removed from the carrier, the spring tension is compromised,...HKP-02623$39.95 -
On Sale
HK UMP Release Lever Spring
H&K Heckler & Koch
Now: $8.95Was: $9.95HK UMP Release Lever Spring For All UMP LowersHKP-01891Now: $8.95Was: $9.95 -
On Sale
HK UMP Firing Pin Retainer Pin
H&K Heckler & Koch
Now: $6.95Was: $7.95HK UMP Firing Pin - Retainter Pin This is the pin that trips the trip lever on the UMP lower. Compatible With: HK UMPHKP-01894Now: $6.95Was: $7.95 -
On Sale
HK MP5K, AP5-P Recoil Rod Assembly
MKE
Now: $54.95Was: $64.95MKE HK AP5P/MP5K Recoil Rod Assembly The recoil spring assembly is a great item to have on hand for replacement and spares as this is a consumable wearable part. Compatible With: HK SP5K/MP5K/SP89 Century Arms AP5-P/AP5-M Clones and other HK...HKP-22389Now: $54.95Was: $64.95