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 SP5K Mag Release Upgrade Kit - 9mm - Drop In Paddle
HKP HK Parts
$74.95HKP HK Parts Anti-Rattle Roller Tipped "Paddle" Magazine Release Install Kit for HK SP5K No modifications! No refinishing! Complete drop-in kit included. New USA made busing for a drop-in install kit for the HK SP5K. This kit will allow any end-user to...HKP-18192$74.95 -
On Sale
HK416, MR556, HK417, MR762 Takedown Pin - Rear - A1 Style
H&K Heckler & Koch
Now: $71.95Was: $79.95H&K HK MR556/MR762/416/417 Rear Lower Receiver Locking Pin This is the rear takedown pin with ball detent and locking mechanism installed. The idea behind this type of system is to decrease the movement of the upper and lower receivers and improve...HKP-02672Now: $71.95Was: $79.95 -
HK MP5, MP5K Magazine Release Paddle - Anti-Rattle Roller-Tip - 9mm
H&K Heckler & Koch
$64.95Heckler and Koch Anti-Rattle Roller Tipped "Paddle" Magazine Release for HK MP5, MP5K Factory German made Paddle mag release for all 9mm MP5, MP5K HK builds. Our parts are made by HK in Germany and are factory-fresh production. Compatible With: MP5,...HKP-00117$64.95 -
On Sale
HK91, G3, HK33, HK53 HK93 Tac Latch
Now: $62.95Was: $69.95HK Rifle Tac Latch for HK91, G3, HK93, and HK33 HK's were designed to have a quick one-handed release capability for the magazine (paddle mag release). However, the semi-auto versions eliminated this much-needed feature due to import restrictions...HKP-02791Now: $62.95Was: $69.95 -
On Sale
HK SP5K 9mm Drop In Paddle Mag Release Upgrade Kit
H&K Heckler & Koch
Now: $116.95Was: $129.95HKP HK Parts and Heckler and Koch Anti-Rattle Roller Tipped Paddle Magazine Release Kit No modifications, no refinishing...complete drop-in kit included New HK German and USA made paddle mag release kit for the HK SP5K. This kit will allow any...HKP-18082Now: $116.95Was: $129.95 -
Out Of Stock
HK416, MR556 Ejection Port Cover Assembly
H&K Heckler & Koch
$89.95HK German HK 416, MR556 Ejection Port Cover Door Assembly Complete This is the newer polymer style cover found on the latest HK 416 and MR556's. This is the complete ejection port door assembly needed on all AR15 or MR556/HK416 models. Can also be used...HKP-16951$89.95 -
On Sale
PTR Spec Tac Latch
Other
Now: $62.95Was: $69.95Tac Latch (latest Generation) PTR Spec - PTR .308 Firearms The new updated style of Tac latch is made specifically for the PTR 91 .308 receiver and will require very little modification to the firearm for installation. A major overhaul of the existing...HKP-17611Now: $62.95Was: $69.95 -
On Sale
HK416, MR556, MR762 Forward Assist Assembly, Complete
H&K Heckler & Koch
Now: $67.95Was: $74.95H&K Heckler and Koch Forward Assist Assembly for HK416, HK MR556, and HK MR762 H&K Germany factory HK MR556 and HK416 forward assist assembly complete. Compatible With: HK 416, MR556 HK MR762HKP-16528Now: $67.95Was: $74.95 -
On Sale
HK MP5, HK94, MP5K, SP5K Tac Latch
Other
Now: $59.95Was: $69.95New Tac Latch (latest Generation) Paddle Style Magazine Release For The HK94, SP89, HK SP5K Family of Firearms HK's were designed to have a quick one-handed release capability for the magazine (paddle mag release). However, the semi-auto...HKP-02792Now: $59.95Was: $69.95 -
Out Of Stock
HK33, HK53, HK93 Extractor
H&K Heckler & Koch
$67.95H&K 93, 53, & 33 (5.56/.223) Extractor A great replacement for your HK or clone. A high wear item that can become worn, chipped, and non-relaible. A must have spare part. German HK factory fresh production.HKP-00189$67.95 -
On Sale
HK416, MR556, G36, SL8 Gas Piston
Nefarious Arms
Now: $67.95Was: $74.95Nefarious Arms Gas Piston for HK G36, HK SL8, HK416 and HK MR556 A great spare, upgrade, or replacement part for your HK. Includes 3 piston rings for a complete drop in replacement part. TiN coated for corrosion resistance. Compatible...HKP-21364Now: $67.95Was: $74.95 -
On Sale
HK UMP, USC Firing Pin Assembly - Complete
H&K Heckler & Koch
Now: $74.95Was: $82.95HK German USC & UMP Firing Pin Assembly Complete A great spare to have on hand as this item is a hard-to-find replacement part. Compatible With: USC 45 UMP 45 UMP 40 UMP 9mm ALL USC Conversions ALL UMP MG'sHKP-00609Now: $74.95Was: $82.95