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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Out Of Stock
H&K HK G36, HK SL8 Lower Axle Pin
H&K Heckler & Koch
$0.00G36 & HK SL8 Lower Axle Pin The G36/SL8 (all models) uses the same size axle pin for all of the lower components (3 total). Except for the bolt holding open the device axle. Must insert from the right side to the left (per factory instruction).HKP-00291$0.00 -
H&K HK G36/SL8 Piston Rod Spring
H&K Heckler & Koch
$9.99HK G36 & SL8 Piston Rod Spring A must-have spare repair and replacement part. New HK German factory part. Compatible With: HK G36 HK SL8HKP-01863$9.99 -
H&K HK Mark 23 Buffer Recoil Assembly Spring Washer
H&K Heckler & Koch
$9.95H&K HK Mark 23 Buffer Recoil Assembly Spring Washer This washer has a recessed groove for the spring on the end of the recoil assembly.HKP-16641$9.95 -
H&K HK Mark 23 Decocking Lever - Black
H&K Heckler & Koch
$53.95HK Mark 23 Decocking Lever - BlackHKP-01784$53.95 -
$9.95 -
H&K HK Mark 23 Left Side Safety Lever
H&K Heckler & Koch
$36.95HK Mark 23 Left Side Safety LeverHKP-01771$36.95 -
H&K HK Mark 23 Recoil Assembly Buffer Spring Retainer
H&K Heckler & Koch
$11.95H&K HK Mark 23 Recoil Assembly Buffer Spring RetainerHKP-16643$11.95 -
H&K HK Mark 23 Recoil Spring Washer
H&K Heckler & Koch
$9.95H&K HK Mark 23 Recoil Spring Washer New HK German Mark 23, SOCOM Recoil Spring Washer for Recoil Assembly.HKP-16640$9.95 -
H&K HK Mark 23 Right Side Safety Lever
H&K Heckler & Koch
$46.95HK Mark 23 Right Side Safety LeverHKP-01787$46.95 -
H&K HK MR762 Hammer Complete - Black
H&K Heckler & Koch
$179.95H&K HK MR762 Hammer Complete - Black HK MR762 hammer, hammer spring, & bushing as a complete hammer assembly.HKP-16614$179.95 -
H&K HK P2000 Recoil Spring Guide Rod
H&K Heckler & Koch
$39.95HK P2000 Recoil Spring Guide RodHKP-02495$39.95 -
H&K HK P2000/P30SK Safety Lockout
H&K Heckler & Koch
$9.95HK P2000 & P30SK Safety LockoutHKP-02493$9.95 -
H&K HK P30/P30S Recoil Spring Guide Rod
H&K Heckler & Koch
$49.95HK P30 & P30S Recoil Spring Guide Rod This is the guide rod portion of the recoil spring assembly. The rod is the only part included with no spring or rings.HKP-02247$49.95 -
H&K HK P30S/P30LS Control Latch
H&K Heckler & Koch
$19.95HK German Control Latch Compatible With: HK P30S HK P30LSHKP-18120$19.95 -
Out Of Stock
H&K HK P7 Series Firing Pin
H&K Heckler & Koch
$0.00H&K HK P7 Series Firing Pin Compatible With: HK P7 PSP HK P7 M8 HK P7 M10 HK P7 M13HKP-00796$0.00 -
H&K HK P7M10 .40 S&W Magazine Follower Insert
H&K Heckler & Koch
$34.95HK P7M10 .40 S&W Magazine Follower InsertHKP-01364$34.95 -
On Sale
H&K HK P7M10 .40 S&W Magazine Follower Insert - USED - BLEMISHED
H&K Heckler & Koch
Now: $22.95Was: $34.95H&K HK P7M10 .40 S&W Magazine Follower Insert - USED - BLEMISHED USED. COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL.HKP-01364-BNow: $22.95Was: $34.95 -
Out Of Stock
$0.00 -
Out Of Stock
H&K HK SL8-1 Complete Locking Lever
H&K Heckler & Koch
$0.00H&K HK SL8-1 Complete Locking LeverHKP-16375$0.00 -
H&K HK USP .45 ACP Recoil Rod
H&K Heckler & Koch
$29.95H&K HK USP .45 ACP Recoil Rod Factory German HK correct Recoil Rod for the HK USP 45 Full Size pistol. Compatible With: HK USP 45 Full Size PistolHKP-16998$29.95 -
H&K HK USP Buffer Spring Retainer
H&K Heckler & Koch
$6.95H&K HK USP Buffer Spring Retainer Compatible With: HK USP 45 HK USP 40 HK USP 9mmHKP-16232$6.95 -
Out Of Stock
H&K HK USP New Style Hammer Strut
H&K Heckler & Koch
$0.00HK USP New Style Hammer Strut Compatible With: HK USP 9mm Full Size HK USP 40 S&W Full SizeHKP-01661$0.00 -
H&K HK USP Old Style Catch
H&K Heckler & Koch
$39.95HK USP Old Style Catch Compatible With: HK USP 9mm HK USP 40HKP-01932$39.95 -
H&K HK USP Old Style Firing Pin Block
H&K Heckler & Koch
$32.95HK USP Old Style Firing Pin Block Compatible With: HK USP 45 HK USP 40HKP-01927$32.95 -
H&K HK USP Old Style Incomplete Hammer
H&K Heckler & Koch
$59.95HK USP Full Size Incomplete Hammer - Variant 1-4, 9, & 10 This hammer is the same as the complete hammer, only missing the small parts in the hammer. All metal and no rubber, as found on early USP models. Compatible With: HK USP 9mm HK USP 40...HKP-01631$59.95 -
Out Of Stock
H&K HK USP Series Old Style Catch
H&K Heckler & Koch
$29.95H&K HK USP Series Old Style Catch Compatible With: HK USP 9mm HK USP 40 HK USP 45 HK USP Compact 9mm HK USP Compact 40 HK USP Compact 357 HK USP Compact 45 HK USP Compact LEMHKP-01176$29.95 -
Out Of Stock
H&K HK USP V5/6/7 Incomplete Bobbed Hammer
H&K Heckler & Koch
$0.00HK USP Bobbed Hammer - Variants 5, 6, & 7 This is an incomplete hammer. That means no springs or pins are included with this item. Compatible With: HK USP 9mm HK USP 40 S&W HK USP 45 ACPHKP-01626$0.00 -
Out Of Stock
H&K HK USPC Original Style Firing Pin
H&K Heckler & Koch
$0.00HK USP Compact Firing Pin - Original Style Compatible With: HK USP Compact 9mm HK USP Compact 40 S&W HK USP Compact 357 SIG HK USP Compact LEMHKP-01286$0.00 -
Out Of Stock
H&K HK USPC V3 Control Lever
H&K Heckler & Koch
$0.00HK USPC V3 Control Lever Compatible With: HK USP Compact 9mm HK USP Compact 357 SIG HK USP Compact 40 S&W HK USP Compact 45 ACPHKP-01436$0.00 -
Out Of Stock
H&K HK USPC/P2000 9mm/.40 S&W Titanium Firing Pin
HKP HK Parts
$49.95H&K HK USPC/P2000 9mm/.40 S&W Titanium Firing Pin Latest generation current design USPC/P2000/P2000SK Titanium firing pin. A solid billet CNC offering at 40+% lighter than comparable steel firing pins. Our titanium firing pins travel faster in...HKP-17810$49.95 -
H&K HK VP9, HK VP40 Locking Block Guide
H&K Heckler & Koch
$119.95H&K HK VP9, HK VP40 Locking Block Guide Locking Block Guide complete/welded for all VP9 & VP40 frames. Compatible With: HK VP9 HK VP40HKP-16789$119.95 -
H&K HK VP9SK Locking Block Guide
H&K Heckler & Koch
$99.95H&K HK VP9SK Locking Block Guide Locking block guide complete, welded for frame on all HK VP9SK, VP40SK models. Compatible With: HK VP9SK HK VP40SK Does NOT fit the full size VP modelsHKP-18309$99.95 -
H&K HK21E/HK23E Rear Sight Base
H&K Heckler & Koch
$79.95H&K HK21E/HK23E Rear Sight Base Genuine HK German rear site base. Requires post installation machining to accommodate a scope. Compatible With: HK21E HK23EHKP-21508$79.95 -
Out Of Stock
H&K HK416, MR556 Ejection Port Cover - FDE
H&K Heckler & Koch
$0.00HK German HK 416, MR556 Ejection Port Cover In RAL7008 -FDE HK manufactured newer polymer style cover assembly found on the latest HK 416 & MR556's. This item can also be used on other AR15 style projects to enhance the project with the finest...HKP-19450$0.00 -
H&K HK45C/USPC Stripped Recoil Spring Guide Rod - Black
H&K Heckler & Koch
$79.95H&K HK45C/USPC Stripped Recoil Spring Guide Rod - Black This is the guide rod for the recoil spring assembly. It only includes the rod, no spring. Compatible With: HK45C HK USPCHKP-02245$79.95 -
Out Of Stock
H&K MP5 Firing Pin and Spring Set-Used
H&K Heckler & Koch
$0.00Used German HK MP5 Firing pin with new F/P Spring. Sold as a set, pull off's from trade in German MP5's.HKP-00666$0.00 -
H&K MSG90 (7.62x51/.308) +2 Rollers 8.02mm Set -Titanium
H&K Heckler & Koch
$284.95MSG90 (7.62x51/.308) +2 Rollers 8.02mm Set -Titanium Half moon rollers. 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 order - plus-size rollers increase the...HKP-02453$284.95 -
H&K MSG90 (7.62x51/.308) +4 Rollers 8.04mm Set -Titanium
H&K Heckler & Koch
$329.95MSG90 (7.62x51/.308) +4 Rollers 8.04mm Set -Titanium Half moon rollers. 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 order - plus-size rollers...HKP-02454$329.95 -
H&K MSG90 (7.62x51/.308) -2 Rollers 7.98mm Set -Titanium
H&K Heckler & Koch
$284.95HK German MSG-90 Titanium -2 or 7.98mm Half moon rollers. 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 order - plus-size rollers increase the bolt gap...HKP-01063$284.95 -
H&K MSG90 (7.62x51/.308) -4 Rollers 7.96mm Set -Titanium
H&K Heckler & Koch
$329.95MSG90 (7.62x51/.308) -4 Rollers 7.96mm Set -Titanium Half moon rollers. 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 order - plus-size rollers...HKP-02451$329.95