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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$29.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Hammer Spring - Left
H&K Heckler & Koch
$9.95HK UMP & USC - Left Side Hammer Spring For All Lowers A high-wear item that needs to be changed when light firing pin strikes develop on your USC or UMP firearm. Compatible With: HK UMP models 45, .40, & 9mm. USC .45 and other conversion...HKP-01898$9.95 -
H&K VP9/VP9SK, HK VP40 Axle For Drop Safety
H&K Heckler & Koch
$34.95H&K VP9/VP9SK, HK VP40 Axle For Drop SafetyHKP-16837$34.95 -
Out Of Stock
HKP HK MR556/416 SS Firing Pin
HKP HK Parts
$29.95Firing Pin For HK 416 & MR556 Firearm - USA Made from hardened stainless steel and comes new in the white. Compatible With: HK416 HK MR556 HK CR556 HK M27HKP-01756$29.95 -
Out Of Stock
HKP HK UMP (.40 S&W/.45 ACP/9mm) Paddle Mag Release - Extended
HKP HK Parts
$24.95UMP Paddle Magazine Release - Extended Billeted alloy UMP magazine release. This is a very common repair & replacement part as they are fairly easy to break on the UMP lower. With this new metal mag release you get more surface area as well as a much...HKP-17919$24.95 -
Single Optic Front Sight Screw - G36 - Extended
USA
$5.95Single Optic Front Sight Screw - G36 - ExtendedHKP-20894$5.95 -
H&K G36 (5.56/.223) 2 Round Burst Disconnector Axle
H&K Heckler & Koch
$10.95H&K G36 (5.56/.223) 2 Round Burst Disconnector AxleHKP-16350$10.95 -
H&K G36/MP7 (4.6x30/5.56/.223) Firing Pin Bolt O-Ring
H&K Heckler & Koch
$9.95HK G36 & MP7 Firing Pin - Bolt O-Ring Compatible With: HK G36 HK MP7HKP-01858$9.95 -
H&K G36/SL8 (5.56/.223) Barrel Retaining Nut
H&K Heckler & Koch
$29.95HK G36 & SL8 Barrel Retaining Nut - German HK Compatible With: SL8 (all models and variants) G36E G36K G36C All other G36 VariantsHKP-16341$29.95 -
H&K HK G36 Right Side Lower Hammer Spring
H&K Heckler & Koch
$8.95HK G36 Right Side Lower Hammer SpringHKP-01857$8.95 -
Out Of Stock
H&K HK G36/SL8 Extractor Rubber Pin
H&K Heckler & Koch
$0.00HK G36 & SL8 Extractor Rubber PinHKP-02162$0.00 -
H&K HK Mark 23 Secondary Recoil Compression Spring
H&K Heckler & Koch
$19.95H&K HK Mark 23 Secondary Recoil Compression SpringHKP-16642$19.95 -
H&K HK MR556/416 Forward Assist Plunger Pin
H&K Heckler & Koch
$9.95H&K HK MR556/416 Forward Assist Plunger PinHKP-17542$9.95 -
H&K HK MR762 Firing Pin Retaining Pin
H&K Heckler & Koch
$19.95H&K HK MR762 Firing Pin Retaining Pin Compatible With: HK MR762HKP-16612$19.95 -
H&K HK MR762/417 Cylindrical Pin For Stop Pin
H&K Heckler & Koch
$9.95HK 417 & MR762 Cylindrical Pin For Stop Pin HK 2x18 mm pin designed for use with the rear take down pin detent and spring. Compatible With: MR762 HK 417HKP-16619$9.95 -
H&K HK P30L Recoil Spring Guide Rod
H&K Heckler & Koch
$39.95HK P30L (Long Slide) Recoil Spring Guide Rod - Stripped New Factory HK P30L Recoil Rod. Compatible With: P30L P30L V2 P30L V3 (SA/DA)HKP-16654$39.95 -
H&K HK P30SK/P2000SK Hammer Strut
H&K Heckler & Koch
$17.95HK P2000SK & P30SK Hammer Strut Compatible With: HK P2000SK HK P30SKHKP-02597$17.95 -
H&K HK USP Expert Bobbed Hammer
H&K Heckler & Koch
$29.95USP Expert Bobbed Hammer Old Style The USP Expert Hammer works with HK USP Expert variants. Compatible With: HK USP Expert 9mm HK USP Expert 40 HK USP Expert 45HKP-18198$29.95 -
H&K HK USP Series Old Style Firing Pin Block
H&K Heckler & Koch
$29.95HK USP Series Old Style Firing Pin Block Compatible With: HK USP 45 HK USP 40 HK USP 9mm HK USP Compact 9mm HK USP Compact 357 HK USP Compact 40 HK USP Compact 45HKP-01926$29.95 -
H&K HK USP/45/45C Old Style Bobbed Hammer
H&K Heckler & Koch
$49.95HK USP & USPC Bobbed Hammer - Older Style (without the cutout) This part is compatible with older USP full-size & USPC firearms that have the old-style hammer already. Perfect for those who prefer the shorter, lower profile "bobbed" hammer. This...HKP-14552$49.95 -
H&K HK USP/USPC Disconnector
H&K Heckler & Koch
$9.95HK USP & USPC Disconnector Compatible With: USP 45 USP 40 USP 9mm USPC 45 USPC 40 USCP 9mHKP-02685$9.95 -
H&K HK USPC Right Side Ambidextrous Control Lever
H&K Heckler & Koch
$29.99HK USPC Right Side Ambidextrous Control Lever Compatible With: HK USP Compact 9mm .357 SIG .40 S&W .45 USPC Tactical Will fit the HK USP Full Size but will have a lower profile than the USP full-size lever 9mm .357 Sig .40 S&W ...HKP-02275$29.99 -
H&K MP5 40/10 +2 Roller
H&K Heckler & Koch
$19.99MP5 40,10 +2 Roller New HK German MP5 40/10 +2 roller. Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production. Please Note: The price listed is per roller. Order 2 (pair)...HKP-00334$19.99 -
H&K MP5 40/10 +4 Roller
H&K Heckler & Koch
$20.95New HK German MP5 40/10 +4 roller Hard to find and essential for making headspace adjustments when necessary. Great spare to have on hand and no longer in production. Please Note: The price listed is per roller. Order 2 (pair) for a complete set...HKP-00335$20.95 -
H&K USC/SL8 (.45 ACP/5.56/.223) Rear Sight Spring
H&K Heckler & Koch
$9.95H&K USC/SL8 (.45 ACP/5.56/.223) Rear Sight SpringHKP-16516$9.95 -
$81.95 -
HKP HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B Sling Pin
HKP HK Parts
$49.95HKP HK UMP/USC (.40 S&W/.45 ACP/9mm) Stock Block B Sling Pin The original thumb screw version for all stock block B's.HKP-21504$49.95 -
H&K HK Mark 23 Safety Detent Spring
H&K Heckler & Koch
$7.95HK Mark 23 Safety Detent SpringHKP-01790$7.95 -
$11.99 -
H&K HK P30 .40 Complete Recoil Assembly
H&K Heckler & Koch
$89.95HK P30 .40 Cal Recoil Rod Assembly Complete A genuine German Heckler & Koch part. New Factory Fresh HK parts help the pistol function as it was designed. Compatible With: HK P30 .40 cal.HKP-02437$89.95 -
H&K HK SL8-1 Incomplete Locking Lever
H&K Heckler & Koch
$9.95H&K HK SL8-1 Incomplete Locking LeverHKP-16367$9.95 -
H&K HK USP .45 ACP Buffer Spring Retainer Roll Pin
H&K Heckler & Koch
$7.95HK USP .45 ACP Buffer Spring Retainer Roll PinHKP-02267$7.95 -
Out Of Stock
HKP HK USP New Style Titanium Firing Pin
HKP HK Parts
$49.95HKP HK USP New Style Titanium Firing Pin 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 pins also carry...HKP-17826$49.95 -
H&K 10 Round HK USP .45 ACP Standard Floor Plate - Black
H&K Heckler & Koch
$10.95H&K 10 Round HK USP .45 ACP Standard Floor Plate - Black Perfect for concealed carry as the flat floor plate has a lower profile. Compatible With: HK USP .45 Magazine - 10 round HK USP .45 Tactical Magazine - 10 roundHKP-01194$10.95 -
H&K G36 (5.56/.223) Burst Disconnector Spring
H&K Heckler & Koch
$9.95HK German G36 2 Round Burst Disconnector Spring For All HK Burst G36 Burst LowersHKP-12703$9.95 -
$7.95 -
H&K HK 45/P30SK Lockout Compression Spring
H&K Heckler & Koch
$6.95HK 45 & P30SK Lockout Compression Spring Compatible With: HK45 HK45 Compact HK P30SKHKP-02272$6.95 -
H&K HK Mark 23 Hammer
H&K Heckler & Koch
$79.95HK Mark 23 Hammer Factory new hammer for the Mark 23 or SOCOM pistol.HKP-01578$79.95 -
$42.95 -
H&K HK MR556/417 Index Pin Spring
H&K Heckler & Koch
$7.95H&K HK MR556/417 Index Pin SpringHKP-17021$7.95