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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$10.95 -
Out Of Stock
HK45C, USPC Firing Pin - Titanium
HKP HK Parts
$49.95HKP HK USPC/45C Titanium Firing Pin 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 pins also carry less...HKP-17801$49.95 -
Out Of Stock
HK USP V5, V6, V7 Complete Bobbed Hammer
H&K Heckler & Koch
$0.00HK USP V5/6/7 Complete Bobbed Hammer Compatible With: HK USP 9mm HK USP 40HKP-01934$0.00 -
Out Of Stock
HK USP Series Old Style Catch
H&K Heckler & Koch
$29.95H&K HK USP Series Old Style Catch Compatible With: HK USP 9mm HK USP 40 HK USP 45 HK USP Compact 9mm HK USP Compact 40 HK USP Compact 357 HK USP Compact 45 HK USP Compact LEMHKP-01176$29.95 -
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 P30 Series Right Slide Release Short - BLEMISHED
H&K Heckler & Koch
Now: $26.95Was: $32.95HK P30 Series Right Slide Release Shorty INSTALLATION MARKS - DAMAGED PACKAGING COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. This is a shorter version...HKP-02487-BNow: $26.95Was: $32.95 -
On Sale
HK UMP Paddle Mag Release - Extended - 9mm / .40 S&W / .45 ACP - 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 -
HK MP5, G3, MKE AP5 Elbow Spring with Roller - Full-Auto
MKE
$4.95MKE AP5, HK MP5, G3 Full-Auto Elbow Spring with Roller This elbow spring is manufactured by MKE from steel and is used in MP5 and G3 pattern trigger packs. It provides proper tension and function for the trigger pack elbow and is suitable for...HKP-22489$4.95 -
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