HK Rifle / SMG Parts
Elevate Your HK Rifle with Premium Parts – MP5, HK416, SP5, and More!
Enhance your HK rifle with top-notch parts and accessories. From HK MP5 and HK MP5K to HK SP5 and HK UMP or HK USC, we offer a vast selection. Discover high-quality magazines, binary triggers, stocks, grips, barrels, handguards, sights, and more for your firearm. Whether you own an HK416, HK SP5K, HK G36, or HK MP5 22, we have the Heckler and Koch rifle parts you've been looking for. Shop now to upgrade your rifle to perfection.
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HK MP5K, SP89 Trigger Housing - SEF - Contoured - Push Pin - 9mm
H&K Heckler & Koch
$324.95H&K MP5K/SP89 9mm SEF Contoured Trigger Housing - Push Pin Upgrade your HK MP5K or SP89 with this SEF contoured trigger housing, featuring ergonomic finger grooves for enhanced handling. This factory push pin housing is manufactured by HK Germany,...HKP-16551$324.95 -
HK MP5K, SP89, SP5K End Cap, Incomplete - 9mm
H&K Heckler & Koch
$54.95HK Factory German MP5K, SP-89, SP5K End Cap - Incomplete Each pistol end cap is OEM HK German MP5K, MP5K-N, SP5K, SP89 stripped end cap. Compatible With: MP5K SP89 SP5K MP5K-N MP5K-PDW MP5K clones or other custom buildsHKP-18208$54.95 -
HK MP5K Trigger Group - Ambi Navy 3 Position 0,1,F
H&K Heckler & Koch
$2,499.95HK MP5K 3 Position (0,1,F) Navy Ambidextrous Trigger Group HK German MP5K 3 Position 0,1,F Navy Ambidextrous Trigger Group For MP5K, MP5KN or MP5K PDW. New HK German manufacture. This is the real deal. Only a few on hand and once they are all gone there...HKP-00405$2,499.95 -
HK MP5 A3 Buttstock Fork Section with Buttpad
H&K Heckler & Koch
$429.95H&K MP5 A3 Stock Fork Section With Buttpad A common repair item as the buttpad can crack or break off with time or hard use. A hard-to-find item, available here at HK Parts. For use with new style A3 German stocks, NOT the older style stocks...HKP-01044$429.95 -
On Sale
Harris Bipod Mount - KeyMod Handguard
Ergo
Now: $9.95Was: $38.95Ergo Harris Bipod Mount - KeyMod Handguard Features: KeyMod Bipod Mount Black anodized 6061-T6 Alum. Compatible With: Harris-style bipodsHKP-17874Now: $9.95Was: $38.95 -
On Sale
CZ Scorpion Binary Trigger - Curved - BFSIII
FA Franklin Armory
Now: $449.99Was: $495.95Franklin Armory CZ Scorpion - BFSIII - Binary Trigger The BFSIII for CZ Scorpion is a 3-Position Trigger. In position 3 it will fire 1 round on Pull and 1 round on Release. This makes it the fastest semi-automatic trigger on the market. The BFSIII is...HKP-18881Now: $449.99Was: $495.95 -
HK MP5, HK33, HK93 Stock or Brace Adapter - ACE Style
HKP HK Parts
$99.95ACE Adapter for HK MP5 and HK 93 Each ACE adapter is made from a solid billet of CNC machined aircraft grade aluminum. Properly buffered with factory correct "H" buffers to protect your expensive firearm. This is the finest ACE adapter available period...HKP-18504$99.95 -
HK G36 2 Position Lower Housing - FDE
HKP HK Parts
$154.95HK G36 (5.56/.223) 2 Position (0,1 Pictogram) Lower Housing This lower housing is available without internals, a unique offering as G36 lowers previously only came as complete trigger groups with both grip and internals. Ideal for SL8 to G36 conversions,...HKP-22510$154.95 -
On Sale
HK MP5 Locking Piece - 100 Degree - USED
H&K Heckler & Koch
Now: $65.95Was: $89.95HK MP5, HK94 100 Degree Locking Piece - USED MP5 100 degree used locking piece.HKP-00668-USEDNow: $65.95Was: $89.95 -
Arm Brace Hook
MI Midwest Industries
$97.95Midwest Industries Arm Brace Hook The Arm Brace Hook is designed for pistols that use a 1.2" diameter buffer tube. It provides a secure and stable point of contact while offering a built-in, ambidextrous QD sling interface. Specifications: Works with...HKP-22417$97.95 -
HK MR556 A4 Hammer - Incomplete - Semi-Auto
H&K Heckler & Koch
$43.95Heckler and Koch Hammer for HK MR556 Semi-Auto rifles Factory-original German steel hammer for MR556 A4 rifles. Designed as a direct replacement for worn or damaged hammers in MR556 A1 and A4 trigger assemblies. Compatible With: MR556A1 MR556...HKP-22384$43.95 -
AP51 MOE PR Stock - PDW
Magpul
$249.95Magpul Century AP51 PDW MOE PR Stock Designed for the Century AP51 PDW platform, this adapter ensures a precise fit and solid lockup for stock installation. Built for durability and proper alignment, it maintains correct stock geometry and function...HKP-22346$249.95