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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HK416, MR556 Magazine Locking Plate
H&K Heckler & Koch
$9.95HK German HK MR556 & HK 416 Magazine Locking PlateHKP-13484$9.95 -
Out Of Stock
HK USC Magazine Locking Plate Insert - .45 ACP
H&K Heckler & Koch
$8.95H&K USC (.45 ACP) Magazine Locking Plate InsertHKP-16384$8.95 -
Out Of Stock
HK Locking Roller -4 , 7.96mm
HKP HK Parts
$8.957.96mm - Undersized -4 Roller For HK Roller Lock Bolt HeadHK spec under-sized roller that will fit all HK bolt heads including HK91/G3, HK93/33/53, HK94, MP5, SP89 all clones and the Cetme & Cetme clones. An easy way to remember the size you need to...HKP-17558$8.95 -
On Sale
HK USP V5, V6, V7 Complete Bobbed Hammer - USED
H&K Heckler & Koch
Now: $39.95Was: $59.95HK USP V5, V6, V7 Complete Bobbed Hammer - USED ONLY 1 UNIT AVAILABLE - AS PICTURED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. Compatible With: HK USP 9mm HK USP 40HKP-01934-USEDNow: $39.95Was: $59.95 -
HK UMP Barrel Pin Screw
OMEGA
$13.95Omega UMP Barrel Pin Screw Barrel pin Screw that replaces barrel pins on Omega Gideon Shadow Compatible With: HK UMP HK USC Omega GSHKP-22514$13.95 -
On Sale
HK MP5, 90 Series Locking Plate for Rollers
Special Weapons
Now: $3.95Was: $8.95Special Weapons HK MP5, 90 Series Locking Plate for Rollers SOLD INDIVIDUALLY This item is a common wear item that is great to have on hand as they are one of the top items that break or fail with use and age of the service weapon. Compatible With: MP5,...HKP-99399Now: $3.95Was: $8.95 -
On Sale
HK33, HK53, HK93 Extractor - USED
H&K Heckler & Koch
Now: $48.95Was: $67.95HK33, HK53, HK93 Extractor - USED ONLY 1 UNIT AVAILABLE - AS PICTURED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. A great replacement for your HK or clone. A high wear item that can become worn,...HKP-00189-USEDNow: $48.95Was: $67.95 -
On Sale
HK90 Series Cocking Tube End Cap - Aluminum - USED
HKP HK Parts
Now: $7.95Was: $12.95HK Cocking Tube End Cap - Aluminum - USED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL USED PART SALES ARE FINAL. Made from weight-saving aircraft-grade aluminum alloy. US-made. Compatible With: All 90 series HK firearms and...HKP-02806-USEDNow: $7.95Was: $12.95 -
On Sale
HK UMP Paddle Mag Release - Extended - BLEMISHED
HKP HK Parts
Now: $24.95Was: $34.95HK UMP Paddle Mag Release - Extended - 9mm / .40 S&W / .45 ACP - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Billeted alloy UMP magazine release...HKP-17919-BNow: $24.95Was: $34.95 -
HK91, G3 Retractable Buttstock Retaining Ring - 19x1.2mm
H&K Heckler & Koch
$12.95HK91, G3 19x1.2mm Retaining Ring for A3 Retractable Buttstocks This 19x1.2 retaining ring (circlip-style) is used in the G3 and HK91 A3 retractable buttstock assembly to help retain the locking components in place for proper fit and function. Compatible...HKP-22482$12.95 -
HK MP5, AP5 Full Auto Sear Spring Spacer
MKE
$1.95MKE Distance Sleeve for HK MP5 and AP5 Features: Precision-machined roller used in traditional roller-delayed trigger packs. Ensures perfect trigger geometry, smooth operation, and long-lasting reliability. Compatible With: HK MP5 Century...HKP-22477$1.95 -
HK91, G3, HK93 Anti-Rattle Mag Release
MKE
$32.95MKE Anti Rattle Paddle Magazine Release Upgrade your rifle with MKE's anti-rattle style paddle mag release. Compatible With: HK G3, HK91 HK33, HK53, HK93 HK PSG1, MSG90 In-spec clones and custom buildsHKP-99348$32.95