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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Out Of Stock
HK USP New Style Hammer Strut
H&K Heckler & Koch
$0.00HK USP New Style Hammer Strut Compatible With: HK USP 9mm Full Size HK USP 40 S&W Full SizeHKP-01661$0.00 -
HK USP Old Style Incomplete Hammer
H&K Heckler & Koch
$59.95HK USP Full Size Incomplete Hammer - Variant 1-4, 9, & 10 This hammer is the same as the complete hammer, only missing the small parts in the hammer. All metal and no rubber, as found on early USP models. Compatible With: HK USP 9mm HK USP 40...HKP-01631$59.95 -
Out Of Stock
HK USP V5, V6, V7 Incomplete Bobbed Hammer
H&K Heckler & Koch
$0.00HK USP Bobbed Hammer - Variants 5, 6, & 7 This is an incomplete hammer. That means no springs or pins are included with this item. Compatible With: HK USP 9mm HK USP 40 S&W HK USP 45 ACPHKP-01626$0.00 -
Out Of Stock
HK USP Compact, P2000 Firing Pin - 9mm/ .40 S&W - Titanium
HKP HK Parts
$49.95H&K HK USPC/P2000 9mm/.40 S&W Titanium Firing Pin Latest generation current design USPC/P2000/P2000SK Titanium firing pin. A solid billet CNC offering at 40+% lighter than comparable steel firing pins. Our titanium firing pins travel faster in...HKP-17810$49.95 -
Out Of Stock
HK G36K Rod and Spring - Gas Piston
GSG9
$59.95HK G36K Gas Piston Rod/Spring Assembly - USA New spring assembly that is a must have for spare parts or to use on that HK Sl8-G36 conversion. This is the proper length gas piston to be used for a 12.5" G36K style length gas block and barrel assembly...HKP-18249$59.95 -
Out Of Stock
HK USC Carbine Mag Release - Extended - .45 ACP
HKP HK Parts
$24.95HK USC Alloy Mag Release - Extended Billeted alloy USC magazine release. This is a very common repair & replacement part as they are fairly easy to break on the USC lower. With this new metal mag release you get more surface area as well as a much...HKP-17918$24.95 -
Out Of Stock
HK UMP/USC (.40 S&W) Extractor
$39.95New US-Made USC Or UMP .40 Extractor This part is a repair and replacement item, as these are prone to breakage, and it's a part that's hard to find and a great item to have on hand. Please Note: HK considers this a high wear and replacement...HKP-02624$39.95 -
Out Of Stock
HK UMP (.40 S&W/.45 ACP/9mm) Paddle Mag Release
$9.95UMP Paddle Magazine Release - US Made New UMP Mag release. This is a very common repair & replacement part as they are fairly easy to break on the UMP lower. Simple & easy to install no gunsmith needed or required. Compatible With: UMP .45 UMP ...HKP-18773$9.95 -
Out Of Stock
HK23E Extractor Spring
H&K Heckler & Koch
$0.00HK23E Factory German Extractor Spring Rare and hard to find. This is a new HK German part.HKP-00819$0.00 -
Out Of Stock
HK21E, HK23E Extractor Cylindrical Pin
H&K Heckler & Koch
$0.00HK 21E, HK 23E Extractor Cylindrical Pin This part holds the extractor in place on the bolt head. A great spare to have on hand.HKP-00863$0.00 -
Out Of Stock
HK21, HK23E, PSG1, MSG90 Firing Pin Spring
H&K Heckler & Koch
$0.00HK German HK21E, HK23E Firing Pin Spring A must-have spare and replacement part. No longer in production. Compatible With: HK21E HK23E HK11E HK13 E HK21 HK MSG90 HK PSG1HKP-00816$0.00 -
Out Of Stock
HK21 Firing Pin
H&K Heckler & Koch
$0.00HK German 21 Firing Pin - Old Stock Compatible With: HK21HKP-00546$0.00