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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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 -
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 -
HK416, MR556 A4 Hammer Washer
H&K Heckler & Koch
$58.95Heckler and Koch Hammer Washer for HK MR556 OEM hammer washer for HK MR556 and HK416 rifles. Factory-spec replacement washer for the hammer assembly, ideal for repairs, rebuilds, or returning rifles to original HK configuration. Compatible...HKP-22434$58.95 -
On Sale
HK VP9, VP9SK, VP40 Insert Housing with Ejector - USED
H&K Heckler & Koch
Now: $36.11Was: $49.95HK VP9/SK & VP40 Insert Housing w/ Ejector - USED SOLD INDIVIDUALLY USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Insert housing with ejector for HK VP9 & VP40. Compatible With: HK VP9 HK...HKP-16804-USEDNow: $36.11Was: $49.95 -
On Sale
HK Mark 23 Slide Release Spring - USED
H&K Heckler & Koch
Now: $9.95Was: $15.99HK Mark 23 Slide Release Spring - USED USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL.HKP-01788-USEDNow: $9.95Was: $15.99 -
On Sale
HK MP5K, AP5-P Recoil Guide Rod - 9mm
MKE
Now: $19.95Was: $24.95MKE HK MP5K 9mm Recoil Guide Rod Incomplete recoil spring guide rod. Compatible With: MP5K MKE AP5-PHKP-22237Now: $19.95Was: $24.95 -
On Sale
HK VP9, VP9SK, VP40 Replacement Hex Button ONLY - Gold - BLEMISHED
HKP HK Parts
Now: $13.95Was: $24.95HKP HK VP9/VP9SK/VP40 Replacement Hex Button ONLY - Gold - BLEMISHED ONLY REPLACEMENT HEX BUTTON. DOES NOT INCLUDE SLIDE PLATE. CONDITION MAY VARY. COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE...HKP-18111-GD-BNow: $13.95Was: $24.95 -
HK MP7 Lock Washer
H&K Heckler & Koch
$4.95H&K MP7 Lock Washer Factory lock washer for the MP7 platform. Specifications: Inside diameter: 4.10mm Outside diameter: 7.75mm Compatible With: HK MP7HKP-21978$4.95 -
HK MR762 A4 Hammer
H&K Heckler & Koch
$40.95Heckler and Koch Hammer for HK MR762 A4 Rifles Factory-original German steel hammer for the MR762 A4. Designed as a direct replacement for worn or damaged hammers in MR762 A4 trigger assemblies. Compatible With: HK MR762 A4HKP-21968$40.95