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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H&K UMP/USC (.45 ACP) Extractor
H&K Heckler & Koch
$49.95New USC & UMP .45 Extractor - German Compatible with both the USC & UMP. 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 it is removed from the...HKP-00265$49.95 -
H&K HK MR556/MR762/416/417 Disconnector Spring
H&K Heckler & Koch
$5.95HK416, HK417, MR556, & MR762 Disconnector Spring- Short This is the shorter spring of the 2 found in the trigger assembly. Compatible With: MR556 MR762 HK 416 HK 417HKP-02675$5.95 -
H&K HK MR762, 417, G28 Ejection Cover Axle Spring
H&K Heckler & Koch
$9.95HK417, MR762 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: MR762 HK 417 G28HKP-16753$9.95 -
H&K HK USP Recoil Rod Secondary Buffer Spring
H&K Heckler & Koch
$9.95HK USP Recoil Rod Secondary Buffer Spring This is the spring found under the larger primary recoil spring on the recoil assembly Compatible With: HK USP 45 HK USP 40 HK USP 9mm All HK USP Tactical models HK Elite, ExpertHKP-02470$9.95 -
H&K HK USP/USPC/45/45C Sear Roll Pin
H&K Heckler & Koch
$6.95Sear Roll Pin HK USP 9mm .40 S&W .45 ACP HK USP Compact 9mm .40 S&W .357 SIG .45 ACP HK45 HK45 CompactHKP-01815$6.95 -
H&K HK USPC .40 S&W Recoil Rod Assembly
H&K Heckler & Koch
$89.95Recoil Spring Guide Rod Assembly Complete For The HK USP Compact 40 Cal & .357 SIG New HK German factory part. This is a great spare or replacement item to have on hand. Compatible With: HK USP Compact 40 Cal HK USP Compact .357 SIGHKP-01479$89.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Cocking Lever Spring
H&K Heckler & Koch
$8.95HK UMP & USC Cocking Lever Spring A great spare part to have on hand.HKP-01886$8.95 -
HK G36/SL8 (5.56/.223) Cocking Handle Spring
$9.95G36 Cocking Handle Spring- US Made Compatible With: G36 All variants SL8 All variantsHKP-18369$9.95 -
HKP HK UMP, USC Lower Bolt Catch
HKP HK Parts
$22.95HK UMP & USC Bolt Catch For Last Round Hold Open New HK USA lower bolt catch. Compatible With: HK UMP HK USCHKP-19565$22.95 -
Compression Rod - 90's Series - Titanium
HKP HK Parts
$29.95Compression Rod - 90's Series - Titanium The H&K burst trigger pack compression rods and compression rod springs are the foremost wear/breakage components in burst packs. This replacement compression rod is constructed from titanium, offering...HKP-20887$29.95 -
H&K G36/SL8 (5.56/.223) Factory Recoil Buffer
H&K Heckler & Koch
$20.95HK G36 Or SL8 Factory Recoil Buffer A critical spare part as these buffers deteriorate with usage and time.HKP-00290$20.95 -
H&K HK 416/MR556/MR762 Pistol Grip Screw
H&K Heckler & Koch
$9.95HK 416, MR556, & MR762 Pistol Grip Screw This is the screw used to retail all battle grips/pistol grips on the HK and standard AR15 and M16 firearms. Compatible With: HK416 HK MR556 HK MR762 HK417HKP-02679$9.95 -
Out Of Stock
H&K HK Mark 23 Firing Pin Block Spring
H&K Heckler & Koch
$9.95HK Mark 23 Firing Pin Block Spring Compatible With: Mark 23 Socom .45HKP-01599$9.95 -
H&K HK Mark 23/SOCOM Firing Pin Block
H&K Heckler & Koch
$35.95HK Mark 23/SOCOM Firing Pin Block This is the real deal and it is plated in nickel and made for the HK Mark 23 and SOCOM models. Compatible With: HK Mark 23 SOCOM ModelsHKP-01579$35.95 -
H&K HK VP9/VP9SK, VP40 Trigger Safety Catch Elbow Spring
H&K Heckler & Koch
$6.95H&K HK VP9/VP9SK, VP40 Trigger Safety Catch Elbow Spring Elbow spring for trigger safety catch VP9, VP9SK & VP40.HKP-16772$6.95 -
H&K MP5F & MP5 40,10 Cocking Support Handle Spring
H&K Heckler & Koch
$9.95H&K MP5F & MP5 40,10 Cocking Support Handle Spring One of these springs is required for use with the cocking handle/support assembly. You need the following - MP5 40 cocking tube support, MP5 40 cocking handle, and the cocking handle spring to...HKP-00426$9.95 -
H&K USP/45/45C New Style Bobbed Hammer
H&K Heckler & Koch
$59.95HK USP, USPC & HK45 & HK45C Bobbed Hammer - New Style This has the shorter, lower-profile "bobbed" hammer. The new style hammer has a cutout for 2005 and later production. Compatible With: USP 9mm & USP Compact 9mm USP 40 & USP Compact...HKP-01589$59.95 -
HK G36, HK SL8 Bolt Catch USF
USA
$14.95HK G36 & SL8 Bolt Catch On AR-15 systems this would be similar to a cam pin. Compatible With: G36, G36K, G36C Sl8 variantsHKP-19122$14.95 -
HKP HK MP5 40 Locking Roller -4
HKP HK Parts
$11.95HK US MP540 Undersized Locking Roller, -4 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...HKP-17561$11.95 -
POF MP5, HK94, MP5K, SP89 & SP5K Firing Pin
POF
$24.95HK Contract MP5, HK94 Firing Pin - POF Made from HK prints and tooling in the POF factory. The USA and German HK offering are a better offering with tighter tolerances and better materials. Compatible With: MP5 HK94 MP5K SP89 SP5K All 9mm, 40/10mm...HKP-18264$24.95 -
H&K HK P Series LEM Hammer
H&K Heckler & Koch
$69.95H&K HK P Series LEM Hammer Factory HK German hammer. Compatible With: HK P30 P30L P30SK HK P2000 P2000SKHKP-15436$69.95 -
H&K HK P7 Series Slide Removal Button Spring
H&K Heckler & Koch
$7.95HK P7 Series Slide Removal Button Spring This item is no longer in production. Get it while it's still available. Compatible With: PSP P7M8 P7M10 P7M13HKP-01314$7.95 -
H&K HK VP9, HK VP40 Catch Spring for Dissassembly Lever
H&K Heckler & Koch
$5.95Catch Spring For Dissassembly Lever HK VP9, HK VP40 Compatible With: HK VP9 HK VP40HKP-16786$5.95 -
H&K HK VP9/VP9SK, HK VP40 Disassembly Safety
H&K Heckler & Koch
$7.95Dismounting Or Disassembly Safety HK VP9, VP40 Compatible With: HK VP9 HK VP9SK HK VP40HKP-16792$7.95 -
Out Of Stock
H&K MP5/94 9mm Recoil Rod & Spring Assembly Complete-Used
H&K Heckler & Koch
$35.95HK MP5 & HK94 9mm Recoil Rod & Spring Assembly Complete - UsedHKP-00667$35.95 -
HK G36/MP7 (4.6x30/5.56/.223) Firing Pin Bolt O-Ring
USA
$5.95HK G36 & MP7 Firing Pin Bolt O-ring. This is also the O-ring for the retaining pin for the MP7- US. Compatible With: HK G36 HK MP7HKP-18373$5.95 -
HK P30/L Series Firing Pin - Black
H&K Heckler & Koch
$64.95HK P30 Series Firing Pin - Black Compatible With: HK P30 HK P30LHKP-02211$64.95 -
HKP HK VP9/VP9SK, HK VP40 Quick Detach Hex Button Slide Plate - Blue
HKP HK Parts
$34.95HKP HK VP9/VP9SK, HK VP40 Quick Detach Hex Button Slide Plate - Blue The HK Parts quick-detach slide plate for the HK VP series of pistols is ideal for those that want the ability of quickly and efficiently access the firing pin, sleeve assembly. The...HKP-19061$34.95 -
H&K HK 45/45C V2 Right Side LH Lever - Black
H&K Heckler & Koch
$54.95HK 45 & 45C V2 Right Side LH Lever - Black This is the control lever for left-hand shooters. This would be the lever on the right side of the frame for left-hand shooters. The V2 left lever will allow for both the safety...HKP-02416$54.95 -
H&K HK MR556/416 Forward Assist Assembly
H&K Heckler & Koch
$68.95HK 416, MR556 Forward Assist Assembly H&K Germany factory MR556 & HK416 forward assist assembly complete. Compatible With: HK 416 HK MR556HKP-16528$68.95 -
H&K HK P30 Series Left Slide Release Lever - Black
H&K Heckler & Koch
$59.95Slide Release Lever Left - P30 Latest HK production. Compatible With: P30 P30SKHKP-01879$59.95 -
H&K HK USP V2/6/10 LH Control Lever
H&K Heckler & Koch
$64.95New HK German USP Full Size Control Lever For Variants 2, 6, 10 A common item to convert the USP from a right-handed shooter to a left-handed operation. This is the control lever for the right side of the firearm for left-handed shooters. Compatible...HKP-01415$64.95 -
H&K VP9SK Tactical Complete Recoil Spring Assembly
H&K Heckler & Koch
$75.95HK German VP9SK - Recoil Spring Assembly Complete New recoil spring assembly for all HK VP9SK models. Made in Germany. Compatible With: HK VP9SK Tacticalhkp-18384$75.95 -
H&K HK Mark 23 Extractor
H&K Heckler & Koch
$79.95HK German Mark 23 SOCVOM Extractor New HK German manufacture. This item is no longer being made and is a great spare part to have on hand. Compatible With: Mark 23 SOCOM pistolsHKP-01408$79.95 -
H&K HK P30 Series Right Slide Release Lever - Black
H&K Heckler & Koch
$49.95HK P30 Series Right Slide Release Lever - BlackHKP-01880$49.95 -
H&K HK USP Left Side V1/5/9 Decocking Lever
H&K Heckler & Koch
$79.95H&K HK USP Left Side V1/5/9 Decocking Lever A Heckler and Koch genuine part. This item allows a right-handed shooter to have the safety and or decocking functions on the LEFT side of the firearm. This is to be used in conjunction with the correct...HKP-01169$79.95 -
H&K HK USP/USPC .45 ACP New Style Extractor
H&K Heckler & Koch
$59.95New Style Extractor New HK German part with red loaded chamber indicator. Compatible with: USP 45, USP 45 Tactical USP Compact .45, USPC .45 Tactical USP ExpertHKP-01478$59.95 -
H&K P30/45 Series Cylindrical Grip Pin
H&K Heckler & Koch
$9.95H&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-01808$9.95 -
H&K UMP (.40 S&W/.45 ACP/9mm) Release Lever Spring
H&K Heckler & Koch
$9.95HK UMP Release Lever Spring For All UMP LowersHKP-01891$9.95 -
HKP HK21E/23E Rear Sight Base
HKP HK Parts
$38.95HKP HK21E/23E Rear Sight Base US manufactured billeted from solid ordnance grade bar stock. Each unit is precisely machined to factory tolerances. Requires post installation machining to accommodate a scope. Compatible With: HK21E HK23EHKP-21467$38.95