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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B&T TP9/MP9 Extractor Spring
B&T Brugger & Thomet
$9.95B&T TP9/MP9 Extractor Spring Swiss B&T manufactured TP9 & MP9 extractor spring. A must have spare part! Compatible With: TP9 MP9HKP-17300$9.95 -
H&K 23E/13E/G43 (7.62x51/.308) & (5.56/.223) Extractor
H&K Heckler & Koch
$119.95HK23E & HK13E Extractor New HK German and no longer in production. Compatible With: MM 23E HK 13EHKP-00818$119.95 -
H&K G36/SL8 (5.56/.223) Firing Pin Retaining Pin
H&K Heckler & Koch
$10.95H&K G36/SL8 (5.56/.223) Firing Pin Retaining Pin Compatible With: HK G36 HK SL8HKP-02469$10.95 -
H&K HK 416 Ejector Retaining Pin
H&K Heckler & Koch
$6.95HK 416 Ejector Retaining Pin 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.HKP-00053$6.95 -
H&K HK Mark 23 Decocker C-Clip
H&K Heckler & Koch
$0.00HK Mark 23 Decocking C-Clip (Lock Washer)HKP-01629$0.00 -
H&K HK P Series Control Latch
H&K Heckler & Koch
$19.95HK P Series Control Latch Compatible With: HK P30 HK P30L HK P30SK HK P2000 HK P2000SK Please Note: This is the correct part for the CDA V4.1 Trigger found in Europe.HKP-01957$19.95 -
H&K HK P2000 .40 S&W / .357 SIG Recoil Spring Assembly
H&K Heckler & Koch
$79.95HK P2000 Recoil Spring Guide Rod Assembly Compatible With: HK P2000 40 S&W HK P2000 .357 SIGHKP-01614$79.95 -
H&K HK P7M10/P7M13 Slide Removal Button, Retaining Catch
H&K Heckler & Koch
$29.95H&K HK P7M10/P7M13 Slide Removal Button, Retaining Catch Brand new HK German manufacture. No longer in production. These are the last units that HK made. Last call!HKP-15432$29.95 -
H&K HK USP/45/45C Disconnector
H&K Heckler & Koch
$9.95HK German USP 45, HK45, & HK45C DisconnectorHKP-01175$9.95 -
H&K HK VP9/VP9SK, HK VP40 Drop Safety
H&K Heckler & Koch
$56.95H&K HK VP9/VP9SK, HK VP40 Drop SafetyHKP-16836$56.95 -
H&K MP5 40/10 -4 Roller
H&K Heckler & Koch
$19.95HK 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 for...HKP-00337$19.95 -
HK G36/SL8/USC/UMP Rear Sight Screw
H&K Heckler & Koch
$19.95HK G36, SL8 & USC, UMP Rear Sight Screw Rear sight screw to retain HK G38/Sl8 & USC/UMP rear sights housings to the rear sight base. Compatible With: G36, SL8 USC, UMPHKP-16382$19.95 -
HKP HK 23E/13E (7.62x51/.308) & (5.56/.223) Firing Pin - Titanium
HKP HK Parts
$49.95HK23E, MM23E, 13E Firing Pin - Titanium Grade 6 weapons grade titanium manufacture. Made in the USA. A must have upgrade to have on hand as the firing pin is one of the most abused components in the HK weapon system. Get the lightest, strongest firing...HKP-17770$49.95 -
HKP HK VP9/VP9SK, VP40 Elbow Spring Stop Pin
HKP HK Parts
$6.95HKP HK VP9/VP9SK, VP40 Elbow Spring Stop PinHKP-16779$6.95 -
H&K HK MR762/417 Axle Extractor Retaining Pin
H&K Heckler & Koch
$9.95H&K HK MR762/417 Axle Extractor Retaining Pin This extractor retaining pin is constructed of durable, black finished, steel and is an OEM factory original H&K component. This retaining pin is designed to fit the HK417 & MR762 model of rifles...HKP-16810$9.95 -
$9.99
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H&K HK USP Full Size Right Side Ambidextrous Control Lever
H&K Heckler & Koch
$29.95H&K HK USP Full Size Right Side Ambidextrous Control Lever Good spare to have on hand as they are prone to damage or cracking. This item will only fit the left side ambidextrous control lever with axle.HKP-16625$29.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch
H&K Heckler & Koch
$36.95HK UMP & USC Bolt Catch New HK German lower. Compatible With: HK UMP HK USCHKP-01897$36.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Slide For Lower
H&K Heckler & Koch
$19.95HK USC & UMP Slide For Lower - German New HK German USC slide for conversion of UMP lower.HKP-00268$19.95 -
HK 45/45 Tactical Firing Pin
H&K Heckler & Koch
$44.95HK 45 & 45 Tactical Firing Pin A must-have spare part for your HK45 pistol. Compatible With: HK45 HK45 TacticalHKP-02221$44.95 -
HK G36/SL8 (5.56/.223) Bolt Heads Ejector
$13.95HK G36/SL8 Ejector For All G36, SL8 bolts -US MadeHKP-18371$13.95 -
HK VP9/VP9SK, HK VP40 Catch Cylindrical Pin
H&K Heckler & Koch
$5.99Cylindrical Pin For Catch VP9, VP40 Compatible With: HK VP9 HK VP9SK HK VP40HKP-16802$5.99 -
USA HK UMP Left Hammer Spring
USA
$9.95USA HK UMP Left Hammer Spring New U.S hammer spring- left side 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...HKP-20840$9.95 -
B&T TP9/MP9 Firing Pin - Black
B&T Brugger & Thomet
$44.95B&T Firing Pin For B&T TP9, MP9 B&T MP9, TP9 firing pin. Original Swiss made Brugger and Thomet production in new condition. Compatible With: TP9 MP9HKP-17297$44.95 -
H&K HK 45C LEM Hammer Spring
H&K Heckler & Koch
$9.95Hammer Spring For HK 45C LEM Models This hammer spring is the factory correct LEM hammer spring for the HK45C and HK45CT. This is the spring needed to use any other variant of LEM kit to be complete to be used on the HK45C pistol. This is also a great...HKP-15789$9.95 -
$10.95
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H&K HK P Series Disconnector
H&K Heckler & Koch
$9.95HK P Series Disconnector Compatible With These Models In 9mm, .40 S&W, & .357 SIG: HK P30 HK P30L HK P2000 HK P2000SKHKP-01794$9.95 -
H&K HK P30 V3 Series Hammer
H&K Heckler & Koch
$55.95HK P30 V3 Series Hammer New German HK production. Compatible With: HK P30 V3 HK P30L V3 HK P30LS V3 HK P30SK V3HKP-02503$55.95 -
H&K HK USP Variant 1-6, 9 & 10 Hammer Axle
H&K Heckler & Koch
$31.95HK USP Variant 1-6, 9, & 10 Hammer Axle Compatible With: HK USP 9mm HK USP 40 HK USP 45HKP-01931$31.95 -
H&K HK USPC Variant 4 Right Decock Control Lever - Black
H&K Heckler & Koch
$39.95USPC - Decock Lever V4 - Decock Only Compatible with all USP Compact pistols and provides the V4 Decock ONLY (no safety function) when used with the Variant 3 & 4 Detent Plate. This is the correct lever for those who are "left-handed"...HKP-02264$39.95 -
H&K USC (.45 ACP) Lower Locking Lever Axle
H&K Heckler & Koch
$8.95HK USC Lower Locking Lever Axle A great item to have on hand as spares. New German HK. Compatible With: All USC lowersHKP-16376$8.95 -
HKP HK MP5 (.40 S&W) Locking Roller +6
HKP HK Parts
$11.95HK US MP540 Locking Roller, +6 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 to...HKP-17565$11.95 -
GSG9 HK G36/SL8 (5.56/.223) Barrel Retaining Nut
GSG9
$53.00HK G36 & SL8 Barrel Retaining Nut - USA Made in the USA. Compatible With: SL8 (all models & variants) G36E G36K G36C All other G36 VariantsHKP-18252$53.00 -
H&K 21 (7.62x51/.308) Countersunk Screw - 6x12MM
H&K Heckler & Koch
$4.95HK 21 Countersunk Screw - 6x12MMHKP-16424$4.95 -
H&K 91/93/33/53/G3 (5.56/.223) & (7.62x51/.308) Internal Buffer With Break Springs
H&K Heckler & Koch
$17.95HK German G3, 91, PTR & HK 33, 93 Internal Buffer Brake Spring New HK German Brake Springs for the standard buffer found on the HK G3, 91, PTR & HK93, 33, 53 rear stocks. Compatible With: All standard A2 fixed stock buffersHKP-17424$17.95 -
H&K 93/53/33 (5.56/.223) Firing Pin
H&K Heckler & Koch
$69.95H&K 93, 53, & 33 (5.56/.223) Firing Pin This is the factory-correct HK German firing pin and is a great replacement part. This is also a great upgrade for your HK 223.556 clones. This part is no longer available from HK as this part is out of...HKP-00192$69.95 -
H&K HK G36/SL8 Sling Pin Forearm Retaining Clip
H&K Heckler & Koch
$8.95HK G36 & SL8 Sling Pin Retaining Clip Compatible With: HK G36 HK G36K- older version only HK SL8-1 , SL8-6 Factory ForearmHKP-16366$8.95 -
H&K HK Mark 23 Hammer Strut Spring
H&K Heckler & Koch
$8.95HK Mark 23 Hammer Strut SpringHKP-01581$8.95 -
H&K HK P7M13 Magazine Follower - Black
H&K Heckler & Koch
$39.95HK P7M13 Magazine Follower - Black All steel construction, brand new HK German manufacture. Compatible With: HK P7M13 magazinesHKP-02364$39.95 -
H&K HK SL8-1 Countersunk Top Rail Head Screw
H&K Heckler & Koch
$9.95H&K HK SL8-1 Countersunk Top Rail Head ScrewHKP-16347$9.95