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 Extractor - .40 S&W, 10mm, .357 SIG
H&K Heckler & Koch
$69.95H&K Heckler and Koch New Latest Production 1.4mm Extractor for HK MP5 .40, 10mm, .357 This is the latest and greatest upgraded extractor made by HK. This is also a great upgrade for the many out-of-spec clones out there. Compatible...HKP-00410$69.95 -
HK45 Series, P30 Series Grip Pin - Cylindrical
H&K Heckler & Koch
$5.95H&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$5.95 -
$5.95 -
HK417, MR762, G28 Ejection Port Cover Axle Spring
H&K Heckler & Koch
$9.95H&K HK MR762/417/G28 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: HK MR762 HK 417 HK...HKP-16753$9.95 -
HK45 Compact, USP Compact, P30 Recoil Spring Washer Retainer
H&K Heckler & Koch
$9.95New HK German Recoil Spring Washer Retainer This is the retaining washer that holds the spring captive on the end of the recoil assembly and pushes against the recoil spring. Compatible With: All USP Compact models P2000 P30 HK45 HK45CHKP-01594$9.95 -
HK UMP Magazine Floorplate
HKP HK Parts
$7.95HKP HK UMP Floorplate Compatible With: UMP .45 UMP .40 UMP 9mm These can become cracked or broken with use or drops onto hard surfaces. Made in the USA and counts as 1 US compliant part.HKP-17161$7.95 -
Out Of Stock
HK UMP, USC Extractor - .45 ACP
$39.95HK UMP & USC .45 Extractor 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 removed from the carrier, the spring tension is compromised,...HKP-02623$39.95 -
HK416, MR556 Takedown Pin - Front - A4 Style
H&K Heckler & Koch
$26.95H&K HK416, MR556 A4 Front Takedown Pin The HK416 front takedown pin is a German-made component designed to securely fasten the upper and lower receivers. Precision-machined for a proper fit, it ensures reliable function and serves as an ideal...HKP-21862$26.95 -
HK SL8, G36 Top Rail Screw
H&K Heckler & Koch
$14.95HK SL8 & G36 Top Rail Screw This rail screw is the standard length rail screw used for all SL8 and G36 top rails. With the exception of the dual and single option models. A must have part and an easy part to loose or strip. Grab yours to have...HKP-16390$14.95 -
HK45, HK45T Firing Pin - Titanium
HKP HK Parts
$49.95Firing Pin HK45 & HK45 Tactical - Titanium - Grade 6 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...HKP-17811$49.95 -
HK P30L Recoil Rod Bushing Sleeve
H&K Heckler & Koch
$39.95HK P30L Recoil Rod Bushing Sleeve Compatible With: HK P30L 9mm HK P30L .40HKP-02435$39.95 -
HK MP5 Locking Roller -6 - .40 S&W
HKP HK Parts
$11.95HK US MP540 Undersized Locking Roller, -6 The proper roller size is essential for headspacing the bolt gap correctly. 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...HKP-17566$11.95