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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HK45, HK45 Compact, HK USP Series V7 LEM Hammer Axle
H&K Heckler & Koch
$49.95HK USP Series/45/45C V7 LEM Hammer Axle Compatible With: HK USP 45 HK USP 40 HK USP 9mm HK USP Compact 45 HK USP Compact 40 HK USP Compact 9mm HK USP Compact 357 HK45 HK45 CompactHKP-01929$49.95 -
HK45, HK45 Compact, USP V5 Complete Bobbed Hammer DAO
H&K Heckler & Koch
$68.95Complete Bobbed Hammer DAO Compatible With These Variants 5, 6, 7: USP 45 ACP USP Compact 9mm USP Compact 40 S&W USP Compact 357 SIG USP Compact 45 ACP HK45 HK45 CompactHKP-01592$68.95 -
HK UMP, G36 Burst Lower Slide (0,1,2) - .40 S&W / .45 ACP / 9mm / 5.56 / .223
H&K Heckler & Koch
$14.95HK G36 & UMP Slide For 3 Position Burst Only Lowers - 0,1,2 Only Compatible With: HK UMP HK G36HKP-01887$14.95 -
HK21 Axle pin - 7.62x51 / .308
H&K Heckler & Koch
$9.95H&K 21 (7.62x51/.308) Axle pin 11x12mmHKP-15451$9.95 -
Out Of Stock
HK PSG1 Firing Pin Spring
H&K Heckler & Koch
$0.00HK German PSG-1 Firing Pin Spring. New HK German. A Great Item To Have On Hand As A Spare.HKP-00535$0.00 -
HK MP5 Release Lever - A3 Retractable Buttstock
H&K Heckler & Koch
$19.95HK MP5 A3 Retractable Buttstock Release Lever For use with the newer Navy or F style A3 retractable MP5 stocks. Not for use on the older 1st generation metal levered MP5 stocks. This lever is much easier to break than the older style and a must have item...HKP-16404$19.95 -
HK416, HK417, MR556, MR762 Cylindrical Head Screw
H&K Heckler & Koch
$19.95Heckler and Koch Cylindrical Screw for MR762, HK417, MR556, HK416 Factory replacement cylindrical lens-head Allen screw for maintaining or repairing your HK417 and MR556 rifles with original-spec hardware. Compatible With: HK417, MR762 HK416, MR556HKP-22433$19.95 -
HK90 Series Sear and Trigger Axle - USA
MKE
$1.99HK Sear and Trigger Axle For 90 Series - SURPLUS MKE sear and trigger axle for the 90 series style trigger packs. Each axle pin (aka pivot pin) measures .197 inches (5.0mm). Each HK trigger pack uses a total of 2 of these axle pins per trigger pack...HKP-22233$1.99 -
On Sale
HK MP5 Thread Protector Cap - 10mm / .40 S&W - Threaded 14x.75 - USED
H&K Heckler & Koch
Now: $34.95Was: $49.95H&K Heckler & Koch's MP5 40/10 Thread Protector Cap - Threaded 14x.75 - USED ONLY 4 UNITS AVAILABLE - AS PICTURED Priced for ONE cap - Condition Varies by Unit - Each unit Sold INDIVIDUALLY COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL...HKP-00422-BNow: $34.95Was: $49.95 -
On Sale
HK MP5 40/10 Standard 8mm Roller - BLEMISHED
H&K Heckler & Koch
Now: $12.95Was: $20.95H&K MP5 40/10 Standard 8mm Roller - BLEMISHED MEASURED 8.00mm ROLLER MARKED INCORRECTLY. PACKAGING MAY NOT REFLECT PRODUCT. CONDTION MAY VARY. COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL...HKP-00338-BNow: $12.95Was: $20.95 -
HK CC9 Slide Release
H&K Heckler & Koch
$46.95H&K CC9 Slide Release The CC9 slide release was made in Germany, allows manual release of the slide and locks the slide open on an empty magazine. Compatible With: HK CC9HKP-22124$46.95 -
HK CC9 Slide Release Pin
H&K Heckler & Koch
$5.95H&K CC9 Slide Release Pin Genuine H&K CC9 slide release pin secures the slide release lever to the frame. Compatible With: HK CC9HKP-22121$5.95