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
-
$9.95 -
HK German Locking Roller Standard 8mm - Used
H&K Heckler & Koch
$9.95HK German Locking Roller Standard 8mm - Used The 8mm roller is the proper roller size for standard "zero" function. The correct 8mm roller is essential for proper head spacing & bolt gap. Used HK German. HK locking roller, standard, 8mm. HK German...HKP-20600$9.95 -
HK UMP/USC/SL8/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Fixed Rear Sight Flat Spring
H&K Heckler & Koch
$8.95HK G36, SL8 & USC, UMP Fixed Rear Sight Flat Spring Compatible With: G36 SL8 USC. 45 UMP 9mm UMP .40 UMP .45HKP-16635$8.95 -
Out Of Stock
KNS Precision HK Push Button Take Down Pin - Large
KNS Precision
$24.99KNS Precision HK Push Button Take Down Pin - Large .275" This 7mm (.275") diameter take-down pin has a spring-loaded push button. When the button is depressed, the stainless steel keeper detents retract for easy pin removal. The pin is designed to...HKP-21388$24.99 -
Out Of Stock
KNS Precision HK Push Button Take Down Pin - Small
KNS Precision
$24.99KNS Precision HK Push Button Take Down Pin - Small .234" This 6mm (.234") diameter take-down pin has a spring-loaded push button. When the button is depressed, the stainless steel keeper detents retract for easy pin removal. The pin is designed to...HKP-21389$24.99 -
$7.95 -
$10.95 -
$99.95 -
$59.95 -
H&K HK MR556/416 Ejector Spring
H&K Heckler & Koch
$39.99HK 416 & MR556 Ejector Spring Compatible With: HK 416 HK MR556HKP-02538$39.99 -
$9.95 -
H&K HK MR556/MR762 Long Disconnector Spring
H&K Heckler & Koch
$9.95HK MR556, MR762 Disconnector Spring - Long HK German manufactured disconnector spring. This is the longer of the 2 springs found in the trigger/sear assembly. Compatible With: HK MR556 HK MR762 HK 416 HK 417HKP-16774$9.95 -
H&K HK MR762/417 Ejection Port Cover
H&K Heckler & Koch
$42.95HK German MR762, HK 417 Ejection Port Cover New HK German polymer .308 style MR762, HK 417 & G28 firearms. Compatible With: HK MR762 HK 417 HK G28 Other HK Spec .308 firearmsHKP-16598$42.95 -
$13.95 -
H&K HK P7 Series Cocking Lever Spring Roll Pin
H&K Heckler & Koch
$5.95HK P7 Series Cocking Lever Spring Roll Pin Compatible With: PSP P7M8 P7M10 P7M13HKP-01358$5.95 -
H&K HK SL8-1 Locking Lever Elbow Spring
H&K Heckler & Koch
$9.95HK SL8-1 Locking Lever Elbow SpringHKP-16398$9.95 -
H&K HK USP Series/45/45C V7 LEM Hammer Axle
H&K Heckler & Koch
$49.95HK USP Series/45/45C V7 LEM Hammer Axle Compatible With: HK USP 45 HK USP 40 HK USP 9mm HK USP Compact 45 HK USP Compact 40 HK USP Compact 9mm HK USP Compact 357 HK45 HK45 CompactHKP-01929$49.95 -
H&K HK USPC/HK45 Recoil Spring Guide Rod
H&K Heckler & Koch
$39.95HK USPC & HK45 Recoil Spring Guide Rod Compatible With: HK USP Compact 9mm HK USP Compact 40 S&W HK USP Compact 357 SIG HK USP Compact LEM HK45HKP-01411$39.95 -
$7.95 -
HK P Series Hammer Axle
H&K Heckler & Koch
$54.95HK P Series Hammer Axle Compatible With These Models In 9mm, .40 S&W, & .357 SIG: HK P2000 HK P2000SK HK P30 HK P30L HK P30SKHKP-01797$54.95 -
Out Of Stock
HKP HK USPC/45C Titanium Firing Pin
HKP HK Parts
$49.95HKP HK USPC/45C 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 less...HKP-17801$49.95 -
Out Of Stock
Ambidextrous Sling Pin For Forearm - Small
HKP HK Parts
$24.95Ambidextrous Eyebolt Sling Pin - Small The ambi pin allows the user to replace the handgaurd push pin to attach a sling hook or attachment point to the sling pin loop area. This pin provides a sling attachment point with for either the left or right side...HKP-02684$24.95 -
Out Of Stock
GSG9 G36K Gas Piston Rod/Spring Assembly
GSG9
$59.95HK G36K Gas Piston Rod/Spring Assembly - USA New spring assembly that is a must have for spare parts or to use on that HK Sl8-G36 conversion. This is the proper length gas piston to be used for a 12.5" G36K style length gas block and barrel assembly...HKP-18249$59.95 -
Out Of Stock
H&K +4 Roller 8.04mm - Used
H&K Heckler & Koch
$0.00HK German Roller +4 - Used - 8.04mm 8.04 mm locking roller, The proper roller size is essential for proper bolt gap. HK German Manufacture. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to...HKP-19373$0.00 -
Out Of Stock
H&K 21 (7.62x51/.308) Firing Pin
H&K Heckler & Koch
$0.00HK German 21 Firing Pin - Old Stock Compatible With: HK21HKP-00546$0.00 -
Out Of Stock
H&K 21/21E/23E/PSG1/MSG90 German Firing Pin Spring
H&K Heckler & Koch
$0.00HK German HK21E, HK23E Firing Pin Spring A must-have spare and replacement part. No longer in production. Compatible With: HK21E HK23E HK11E HK13 E HK21 HK MSG90 HK PSG1HKP-00816$0.00 -
H&K 21E (7.62x51/.308) Feed Mechanism Roller Axle
H&K Heckler & Koch
$64.95HK 21E & 23E Series Feed Mechanism Roller AxleHKP-02062$64.95 -
Out Of Stock
H&K 21E/23E (7.62x51/.308) & (5.56/.223) Extractor Cylindrical Pin
H&K Heckler & Koch
$0.00HK 21E, HK 23E Extractor Cylindrical Pin This part holds the extractor in place on the bolt head. A great spare to have on hand.HKP-00863$0.00 -
Out Of Stock
H&K 23E (5.56/.223) Factory Extractor Spring
H&K Heckler & Koch
$0.00HK23E Factory German Extractor Spring Rare and hard to find. This is a new HK German part.HKP-00819$0.00 -
Out Of Stock
H&K 23E/13E (7.62x51/.308) & (5.56/.223) Factory German Firing Pin
H&K Heckler & Koch
$0.00H&K 23E/13E (7.62x51/.308) & (5.56/.223) Factory German Firing Pin New HK23E & HK13E Factory German Firing Pin. Rare as these are no longer made. Perfect spare to have on hand. This will also fit the HK13E and MM23 clones. Compatible...HKP-00820$0.00 -
H&K 90 Series Hammer Spring Bushing For Burst Trigger Packs
H&K Heckler & Koch
$19.9990 Series Hammer Spring Bushing For Burst Trigger Packs This part will fit both two and three-round burst trigger packs.HKP-02398$19.99 -
Out Of Stock
H&K 91/G3 (7.62x51/.308) 7.92mm Roller - (-8)
H&K Heckler & Koch
$0.00HK German Factory -8 Roller 7.92mm in size New HK German negative 8 (7.92mm) that is used for proper head spacing. Hard to find a factory HK roller in this size. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt...HKP-00346$0.00 -
On Sale
H&K Elbow Spring Spacer For Full-Auto - USED SURPLUS - BLEMISHED
H&K Heckler & Koch
Now: $3.95Was: $5.95H&K Elbow Spring Spacer For Full-Auto - USED SURPLUS - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL.HKP-03330-BNow: $3.95Was: $5.95 -
Out Of Stock
H&K Elbow Spring Spacer For Semi-Auto
H&K Heckler & Koch
$0.00New HK German manufacture. Semi auto spacer for elbow spring on the HK 90 series trigger packs.HKP-01553$0.00 -
Out Of Stock
H&K G36/SL8 Dual/Single Optic Front Sight Screw - Extended
H&K Heckler & Koch
$0.00Dual/Single Optic Longer Front Sight Screw - HK German HK German manufacturer. This is a required part if you want to install either the dual or single optic. Compatible With: HK G36 HK SL8HKP-00801$0.00 -
$6.95 -
H&K HK 45 Recoil Spring Guide Rod - Black
H&K Heckler & Koch
$59.95H&K HK 45 Recoil Spring Guide Rod - Black Compatible With: HK 45 HK 45 TacticalHKP-18592$59.95 -
$11.95 -
H&K HK G36 Left Side Safety Lever
H&K Heckler & Koch
$24.95HK G36 Left Side Safety Selector LeverHKP-01875$24.95 -
Out Of Stock
H&K HK G36 Magazine Catch Release Lever
H&K Heckler & Koch
$0.00H&K HK G36 Magazine Catch Release LeverHKP-19771$0.00