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, 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 -
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 MP5, G3, HK91, PTR, HK93, HK33, HK94 Hammer Strut - USED
H&K Heckler & Koch
Now: $5.21Was: $9.95HK G3,91,PTR, 93,33 & MP5, 94 Hammer Strut - USED SOLD INDIVIDUALLY USED PARTS ARE SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. HK German Hammer Strut for 90 series rifles and pistols. A perfect spare to have...HKP-15445-USEDNow: $5.21Was: $9.95 -
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 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 -
HK MR762 A4 Gas Vent Screw - 1.3mm
H&K Heckler & Koch
$32.95H&K MR762 A4 1.3mm Gas Vent Screw The 1.3mm gas vent screw is the standard size installed at the factory on the MR762 A4. Compatible With: MR762 A4HKP-21955$32.95 -
HK MR762 A4 Gas Vent Screw - 2.5mm
H&K Heckler & Koch
$29.95H&K MR762 A4 2.5mm Gas Vent Screw German 2.5mm gas vent screw for MR762 A4. Provides more venting than the factory-installed 1.3mm screw. Compatible With: MR762 A4HKP-21951$29.95 -
HK MR762 A4 Gas Vent Screw - 2.2mm
H&K Heckler & Koch
$29.95H&K MR762 A4 2.2mm Gas Vent Screw German 2.2mm gas vent screw for MR762 A4. Provides more venting than the factory-installed 1.3mm screw. Compatible With: MR762 A4HKP-21949$29.95