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.
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
H&K HK VP9/VP9SK, VP40 Sear Release Catch - Black
H&K Heckler & Koch
$7.95Sear Release Catch HK VP9, VP40 Compatible With: HK VP9 HK VP9SK HK VP40HKP-16798$7.95 -
H&K UMP (.40 S&W/.45 ACP/9mm) Lower Release Lever For Hammer
H&K Heckler & Koch
$9.95HK UMP Catch Release Lever Or Trip Lever For All UMP LowersHKP-01890$9.95 -
HK G36/SL8 (5.56/.223) Ejector Spring
USA
$19.95HK G36 & SL8 Series Of Ejector Spring. Great item to have on hand as this is prone to wear and breakage- US.HKP-18374$19.95 -
H&K HK Mark 23/SOCOM Firing Pin Spring
H&K Heckler & Koch
$8.95HK Mark 23 Firing Pin Spring Compatible With: HK Mark 23 SOCOMHKP-01627$8.95 -
H&K HK P30L Complete Recoil Assembly
H&K Heckler & Koch
$97.95HK P30L (Long Slide) 9mm Recoil Rod Assembly Complete Genuine German Heckler & Koch part for the HK P30L 9mm. Fresh springs help the pistol function as it was designed. Compatible With: HK P30L 9mmHKP-02485$97.95 -
H&K HK USPC V1/5/9 Control Lever
H&K Heckler & Koch
$64.95H&K HK USPC V1/5/9 Control Lever This is the lever for the de-cock and safety functions for right-hand shooters (left side of frame). This lever will provide the safety and decock function if you have a Var 1,2 detent installed. This is the most...HKP-01412$64.95 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch Pin
H&K Heckler & Koch
$5.95H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch PinHKP-16517$5.95 -
H&K VP9/VP9SK, HK VP40 Firing Pin w/ Striker
H&K Heckler & Koch
$49.95H&K VP9/VP9SK, HK VP40 Firing Pin w/ Striker New HK German factory firing pin that fits all models of VP series pistols. Compatible With: HK VP9, VP9 Tactical, VP9L, VP9 OR HK VP9SK VP40, VP40 TacticalHKP-16833$49.95 -
Catch - HK P30, P30L, P2000
$53.95Catch - HK P30, P30L, P2000 New HK German Catch Assembly for all P Series of pistols. Compatible With: HK P30 HK P30L HK P30SK HK P2000 HK P2000SK Calibers P2000 - 9mm P2000 - .40 S&W P2000 - .357 SIG Please note: This is also the latch needed...HKP-15434$53.95 -
H&K MP5 40/10 Bolt Hold Torsion Spring
H&K Heckler & Koch
$19.95MP5 40, 10 Bolt Hold Torsion Spring This is the factory spring used to activate the bolt hold-open lever. Great spare and needed part to have on hand.HKP-00455$19.95 -
H&K HK P30/45/USP/USPC/P2000 Hammer Spring
H&K Heckler & Koch
$9.95Hammer Spring This is the stock hammer spring for many P30 models and is used for the heavy TGS and heavy and light LEM conversions on the USP, USPC, P30 & HK45 models. Compatible With: USP Full Size LEM & V4 USP Compact LEM &...HKP-01804$9.95 -
H&K HK VP9, HK VP40 Disassembly Lever
H&K Heckler & Koch
$24.95Disassembly Lever VP9 & VP40 New HK German VP9, VP40 take down lever. This is the lever that is designed to take the remove the slide from the frame. All steel manufacture.HKP-16818$24.95 -
H&K MP5 Magazine Release Set
H&K Heckler & Koch
$184.95H&K Magazine Release Set This is the complete magazine release kit that includes both the paddle mag release and standard left-to-right mag release on your HK 9mm rifle or pistol build. Compatible With: MP5, MP5K style 9mm models Set...HKP-02402$184.95 -
HKP HK UMP/USC (.40 S&W/.45 ACP/9mm) QD Sling Pin for Stock Block B
HKP HK Parts
$74.95Quick Detach Sling Pin for Stock Block B - USC, UMP This Ambidextrous QD Sling Pin allows you to replace your Push Pin Style or Eyelet Sling Loop - Style Pin in your Stock Block B for use of a QD Sling.HKP-18776$74.95 -
Nefarious Arms HK G36/SL8/HK 416/MR556 Gas Piston
Nefarious Arms
$64.95Nefarious Arms HK G36/SL8/HK 416/MR556 Gas Piston A great spare, upgrade, or replacement part for your HK. Includes 3 piston rings for a complete drop in replacement part. TiN coated gold for added protection and an overall great part. Compatible...HKP-21364$64.95 -
Out Of Stock
H&K 21E/23E (7.62x51/.308) & (5.56/.223) E Clip For Carry Handle
H&K Heckler & Koch
$7.95HK German "E" Clip For Carry Handle For HK21 & HK23E folding carry handles. Clips are sold individually.HKP-00579$7.95 -
H&K HK P2000/USPC New Style Firing Pin
H&K Heckler & Koch
$74.95HK P2000/USPC New Style Firing Pin Compatible With: HK USP Compact 9mm HK USP Compact 40 S&W HK USP Compact 357 SIG HK USP Compact LEM HK P2000 9mm HK P2000 40 S&W HK P2000 357 SIG HK P2000SK 9mm HK P2000SK 40 S&W HK P2000SK 357 SIGHKP-01563$74.95 -
Out Of Stock
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 -
H&K UMP/USC (.40 S&W/.45 ACP/9mm) Lower Locking Pin
H&K Heckler & Koch
$36.95HK German UMP Lower Locking Pin For use with all HK UMP lowers and USC to UMP conversions. New HK German manufacture.HKP-00595$36.95 -
H&K HK 45/45C Left Side Safety Lever - Black
H&K Heckler & Koch
$37.95HK 45/45C Left Side Safety Lever - Black This control lever is for those who are right-handed and want the control lever on the left-hand side of the frame. This is the V1 selector with a decocking function and safety...HKP-01770$37.95 -
H&K HK MR762/417 Gas Block Pin
H&K Heckler & Koch
$7.95H&K HK MR762/417 Gas Block Pin This is the retaining pin for an HK MR762 gas block. A must have as HK says you have to use new pins once they are removed.HKP-16596$7.95 -
HKP AR Grip Screw 1/4x28x1 Hex w/ Locking Washer
HKP HK Parts
$1.95HKP AR Grip Screw 1/4x28x1 Hex w/ Locking Washer This replacement screw is to mount your AR-15/AR-10 pistol grip. 1/4x28x1 with a star lock washer. The best option to use for new builds or to replace your worn out or stripped screw. Black oxide finish...HKP-20685$1.95 -
H&K Detent Plate For HK45/HK45C Variant 5,6 & 9
H&K Heckler & Koch
$54.95H&K Detent Plate New HK German manufacture safety ONLY detent plate. This detent plate will convert the firearm to safety only with no decocking functions. Compatible With: HK45 HK45 Tactical HK45C HK45C TacticalHKP-02079$54.95 -
H&K HK G36/SL8 Extractor
H&K Heckler & Koch
$79.95G36 & HK SL8 German Extractor For Bolt Head New HK German. This is a great item to keep as a spare. Compatible With: All G36 Variants SL8-1, SL8-6HKP-00287$79.95 -
H&K HK USP Recoil Spring Washer Retainer
H&K Heckler & Koch
$7.95H&K HK USP Recoil Spring Washer Retainer This is the tapered washer that supports and keeps the recoil spring centered and captive on the recoil rod itself. Compatible With: HK USP 9mm HK USP .40 HK USP .45 HK USP Tactical Models HK Elite, Expert,...HKP-17060$7.95 -
HK G36, HK SL8, HK 416, HK MR556 Gas Piston - Black
USA
$79.95HK G36, HK SL8, HK 416, & HK MR556 Gas Piston - Black Complete assembly with 3X rings installed and nitrided black. Counts as one US-made compliant part for your SL8-G36 style conversion. This is one of the best parts to use on the conversion as it...HKP-14540$79.95 -
Out Of Stock
H&K 21 (7.62x51/.308) Feed Mechanism Pawl
H&K Heckler & Koch
$69.95HK 21E & M13 Feed Mechanism PawlHKP-02071$69.95 -
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 -
H&K HK MR762/417/G28 Handguard Rail System Screw - Black
H&K Heckler & Koch
$16.95HK MR762, HK 417 Factory Handguard Rail Screw Each MR762 takes and uses 2 retaining screws for the handguard. New HK German manufacture. Compatible With: HK MR762 HK 417 HK G28HKP-16601$16.95 -
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 HK VP9/VP9SK, HK VP40 Insert
H&K Heckler & Koch
$16.95H&K HK VP9/VP9SK, HK VP40 Insert Insert for HK VP9, VP40. Compatible With: HK VP9 HK VP9SK HK VP40HKP-16801$16.95 -
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/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 93/53/33 (5.56/.223) Firing Pin - Stainless Steel
HKP HK Parts
$24.95HKP HK 93/53/33 (5.56/.223) Firing Pin - Stainless Steel Specifications: Made in the USA Made from stainless steel Compatible With: HK 93/53/33HKP-17798$24.95 -
PTR Tactical, Keymod & M-LOK, Retainer Handguard Screw
PTR
$4.95PTR Tactical, Keymod & M-LOK, Retainer Handguard Screw This is the screw that is used on all the Tactical, Keymod, and M-LOK forearms (MP5K, MP5, HK93, HK91). A great spare to have in case the original screw gets lost.HKP-16743$4.95 -
H&K HK SL8/G36 Gas Piston Rod Spring Assembly
H&K Heckler & Koch
$69.95HK German G36 & SL8 Gas Piston Rod Spring Assembly Great for spare parts or to use on that HK SL8-G36 conversion. This is a high-wear item and a must-have spare part. Compatible With: SL8-6, SL8-1 G36E, G36 full sizeHKP-02000$69.95 -
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 -
GSG9 HK G36/SL8 (5.56/.223) Firing Pin
GSG9
$28.95HK G36, G36K, G36C & SL8 Firing Pin - USA A must have spare part for all G36 models. Made in the USA. Fully machined and nitrided for superior strength. Compatible With: G36 G36K G36C SL8HKP-18256$28.95 -
Out Of Stock
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 HK45C Hammer Spring
H&K Heckler & Koch
$8.95Hammer Spring For HK45 Compact This part is shorter than the HK45 hammer spring and is used on the HK45C only.HKP-01805$8.95