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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HK MP5 Bolt Hold Torsion Spring - 10mm / .40 S&W
H&K Heckler & Koch
$39.95MP5 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$39.95 -
HK416, MR556, HK417, MR762 Selector Lever Clamping Sleeve - Ambi
H&K Heckler & Koch
$5.95H&K MR556/MR762/416/417 Ambidextrous Selector Clamping Sleeve German H&K factory clamping sleeve for ambidextrous selector levers on MR556, MR762, HK416, and HK417. Compatible With: HK MR556 A1/A4 HK416 HK MR762 A1/A4 HK417HKP-22062$5.95 -
HK416, MR556, G36, SL8 Gas Piston
USA
$79.95HK G36, HK SL8, HK 416, & HK MR556 Gas Piston 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 is one of...HKP-14540$79.95 -
Out Of Stock
HK21E, HK11E Extractor Spring
H&K Heckler & Koch
$24.95HK21E & 11E Factory Extractor Spring Made by HK Germany for all HK21E's and 11E's.HKP-00815$24.95 -
HK CC9 Backstrap Roll Pin
H&K Heckler & Koch
$5.95H&K CC9 Backstrap Roll Pin This genuine H&K backstrap roll pin for CC9 pistol secures the interchangeable backstrap to the frame. Compatible With: HK CC9HKP-22110$5.95 -
HK MP5, HK94, SP5 Magazine Spring - 20 Round
HKP HK Parts
$6.9520 Round Magazine Spring - HK MP5, 94, SP5 Fits all factory spec steel 20 round MP5, 94 style curved magazines. A must-have repair and replacement part great for spares.HKP-20687$6.95 -
HK VP9, VP9SK, VP40 Sear Release Catch
H&K Heckler & Koch
$7.95Sear Release Catch HK VP9, VP40 Compatible With: HK VP9 HK VP9A1 F HK VP9A1 K HK VP9SK HK VP40HKP-16798$7.95 -
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 -
HK45 Series, USP Series Slide Plate
H&K Heckler & Koch
$9.95H&K HK USP Series/45 Series Slide Plate Compatible With: HK USP 9mm, USP .40 HK USP .45 HK USP Compact 9mm & .40 S&W HK USP Compact .45 ACP All HK Tactical Models HK Elite, Expert HK45C, HK45 HK45C Tactical, HK45 TacticalHKP-01177$9.95 -
HK USP Compact V1, V5, V9 Control Lever
H&K Heckler & Koch
$43.95H&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$43.95 -
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 -
HK G36, SL8 Firing Pin - All Variants
H&K Heckler & Koch
$59.95HK German G36/SL8 Firing Pin This is a great spare to have on hand. The firing pin fits all G36, G36K, G36C & SL8 variants. Compatible With: HK G36/G36K/G36C HK SL8HKP-00289$59.95