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 Locking Roller +6 - .40 S&W
HKP HK Parts
$11.95HK US MP540 Locking Roller, +6 The proper roller size is essential for proper headspacing of bolt gap. 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...HKP-17565$11.95 -
HK MP5, MP5K Sling Attachment Weldment - Ambi - Front End
HKP HK Parts
$14.95HKP Front Sight Tower Ambi Sling Attachment Weldment Ambi sling loop that is welled and installed on all MP5F model front sight tower. A great upgrade for that custom build or for those that want to have the ability to have an ambidextrous sling loop at...HKP-17881$14.95 -
On Sale
Tikka T3 Bolt Handle - Upgrade
Tactical Precision MFG
Now: $34.95Was: $69.99TPM Tikka T3 Bolt Handle Upgrade Designed for exact Tikka specs. Tikka T3 upgraded bolt handle is 17-4 stainless steel for optimal strength and durability. This upgraded bolt handle was designed with a 20-degree angle to help improve bolt manipulation...HKP-20901Now: $34.95Was: $69.99 -
HK416, MR556 Charging Handle Roll Pin
$7.95HK 416, MR556 Roll Pin for Charging Handle - HKP This is the shorter one that is used on the inside of the charging handle. There are two of these pins used per charging handle.HKP-16536$7.95 -
HK G36, SL8 Cocking Handle Spring - US
$9.95G36 Cocking Handle Spring- US Made Compatible With: G36 All variants SL8 All variantsHKP-18369$9.95 -
HK German Ambidextrous Sling Pin Replacement O-Ring
H&K Heckler & Koch
$5.95H&K German Ambidextrous Sling Pin Replacement O-Ring HK ambidextrous sling pin replacement O-ring for all ambidextrous sling pins. Brand new factory German manufacture. This item is a common wear/breakage part that does need to be replaced from time...HKP-19985$5.95 -
Out Of Stock
HK UMP, USC Lower Bolt Catch
HKP HK Parts
$22.95HK UMP & USC Bolt Catch For Last Round Hold Open New HK USA lower bolt catch. Compatible With: HK UMP HK USCHKP-19565$22.95 -
HK VP9, VP9SK, VP40 Trigger Bar Pin
HKP HK Parts
$9.95HKP HK Parts Elbow Spring Stop Pin for HK VP9, HK VP9SK, and HK VP40HKP-16779$9.95 -
HK Mark 23, SOCOM Firing Pin
H&K Heckler & Koch
$51.95New HK German Mark 23 Firing Pin A great item to have on hand as these are a common wear item. Compatbile With: Mark 23HKP-01670$51.95 -
HK Mark 23 Magazine Release
H&K Heckler & Koch
$24.99Heckler and Koch Magazine Release HK Mark 23 Compatible with: Mark 23HKP-01772$24.99 -
Out Of Stock
HK USP .45 ACP Extractor
H&K Heckler & Koch
$49.95HK German Extractor for USP 45 & USP Tactical .45 Full Size Pistol Compatible With: USP 45 USP 45 Tactical USP 45 Expert, EliteHKP-01275$49.95 -
HK G36, SL8 Cocking Handle Spring
H&K Heckler & Koch
$10.95HK German G36 Cocking Handle Spring - All Variants Compatible With: G36 - all variants SL8 - all variantsHKP-01862$10.95