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 UMP Magazine Release - Enhanced - Billeted
HKP HK Parts
Now: $31.95Was: $34.95HKP HK Parts Enhanced Paddle Magazine Release for HK UMP 9mm, .40 S&W, .45 ACP This is a very common replacement part as they are fairly easy to break on the UMP lower. With this new mag release, you'll get a wider release as well as a much more...HKP-18758Now: $31.95Was: $34.95 -
On Sale
HK416, MR556 Extractor Spring Buffer
HKP HK Parts
Now: $4.95Was: $5.39HKP HK MR556/416 Extractor Spring Buffer This buffer fits inside the extractor spring in the extractor pocked of the bolt. This item is a high wear item and a spare would be highly advised. Compatible With: HK MR556 & HK416 FirearmsHKP-21604Now: $4.95Was: $5.39 -
On Sale
HK417, MR762 Mag Catch Retainer Ring
H&K Heckler & Koch
Now: $9.95Was: $10.95Heckler and Koch Magazine Catch Retainer Ring for HK417 and HK MR762 Compatible With: H 417, MR762HKP-16521Now: $9.95Was: $10.95 -
On Sale
HK G36, SL8 Cocking Handle Axle Pin - USA
USA
Now: $9.95Was: $10.95HK G36, SL8 Cocking Handle Axle Pin - US Made This is the rivet pin that is used to attach the swiveling cocking handle to the body of the carrier. These can be replaced as they break and wear. Compatible With: HK G36 models HK SL8 modelsHKP-18367Now: $9.95Was: $10.95 -
Out Of Stock
HK33, HK53, HK93 Magazine Spring - 25 Round
H&K Heckler & Koch
$11.95HK 93, 33, & 53 Magazine Replacement Spring For 25-Round Magazines Hard to find and a must-have spare for your HK mags. No longer in production.HKP-00483$11.95 -
On Sale
HK P30, P30L Firing Pin
H&K Heckler & Koch
Now: $53.95Was: $59.95Heckler and Koch Firing Pin for HK P30, P30L German-made HK firing pin for the P30 and P30L. Steel construction, factory-spec, and designed for both 9mm and .40 S&W models. This is the correct OEM firing pin for restoring proper ignition...HKP-02211Now: $53.95Was: $59.95 -
Out Of Stock
HK A3 Retractable Buttstock Clamping Lever Spring
H&K Heckler & Koch
$19.95HK German Retractable Stock Clamping Lever Spring For A3 Retractable Stocks This spring is the most common breakage/wear item in the internal workings of the A3 retractable stock.HKP-01089$19.95 -
On Sale
HK MP5 Magazine Spring - .22LR - 10 Round
HKP HK Parts
Now: $2.95Was: $3.95HKP 10 Round MP5 .22LR Magazine Spring New fresh production mag spring for your HK MP5 .22 magazine. Please note: This spring can also be used to convert the 10 round magazine to a 10 round magazine. It has come to our attention that Walther has made...HKP-20297Now: $2.95Was: $3.95 -
On Sale
HK416, MR556, HK417, MR762 Handguard Locking Screw
H&K Heckler & Koch
Now: $15.95Was: $16.95HK416, MR556, HK417, MR762 - Handguard Locking Screw Replacement handguard locking screw that secures the handguard to the upper receiver. Compatible With: HK HK416 HK MR556 HK HK417 (2 required per handguard) HK MR762 (2 required per handguard)HKP-16601Now: $15.95Was: $16.95 -
On Sale
HK MP5 Paddle Magazine Release Lever - .40 S&W, 10mm
HKP HK Parts
Now: $50.95Was: $59.95HKP HK Parts Magazine Release Lever for .40 S&W and 10mm HK MP5 Compatible with MP5HKP-01274Now: $50.95Was: $59.95 -
On Sale
HK MR556 A4 Hammer Spring
H&K Heckler & Koch
Now: $4.95Was: $5.95H&K MR556 A4 Hammer Spring Genuine H&K hammer spring for the MR556 A4. Compatible With: HK MR556 A4HKP-22083Now: $4.95Was: $5.95 -
On Sale
HK417, MR762A4 Bolt Catch, Release - Ambi
H&K Heckler & Koch
Now: $48.95Was: $53.95Heckler and Koch MR762 A4 Bolt Catch/Release - Ambi Factory ambidextrous bolt catch lever for the MR762 A4. The A4 variant of the MR762 introduced ambi controls for the bolt catch/release not previously available on the A1 variant...HKP-21960Now: $48.95Was: $53.95