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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HK93, HK53, AP53 Binary Trigger Group - 3 Position 2 Round Burst Engraved
H&K Hechler & Koch / FA Franklin Armory
$1,399.95 - $1,449.95Franklin Armory/H&K 53/93 & AP53 Binary Trigger Group- 3 Position 2 Round Burst Engraved US-manufactured binary trigger pack installed in a German SEF-style polymer housing engraved with 0, 1, 2 pictogram markings. All three positions align with...HKP-22168-M$1,399.95 - $1,449.95 -
HK91, G3 Caliber Conversion Kit - .22LR
H&K Heckler & Koch
$1,895.95Heckler and Koch HK G3, HK91 .22LR Caliber Conversion Kit - LIKE NEW SOLD AS IS. NO RETURNS. Convert any HK91 or HK G3 rifle to cycle .22LR ammunition with this genuine HK caliber conversion kit. This kit is intended for marksmanship training and...HKP-22093$1,895.95 -
On Sale
HK MP5 Trigger Housing - Burst 3 Position 0,1,2 - .40 S&W, 10mm - Push Pin - USED - BLEMISHED
H&K Heckler & Koch
Now: $169.95Was: $249.95H&K Heckler and Koch's 3-Position Burst Trigger Housing and Push Pin made for the HK MP5 10mm/.40 S&W - USED - BLEMISHED CONDITION MAY VARY. SEE PHOTOS. Priced for ONE Trigger Housing ONLY - Condition Varies by Unit - Each unit Sold INDIVIDUALLY...HKP-16469-BNow: $169.95Was: $249.95 -
On Sale
HK MP5 Conversion Kit - CQT FX - Blue - 9mm - Spare Part Lot - BLEMISHED
Simunition
Now: $87.95Was: $319.95CQT FX Simunition Conversion Kit for MP5 - 9mm Blue - Spare Part Lot - BLEMISHED SHADES OF BLUE MAY VARY The CQT FX Simunition conversion spare parts lot from original kits. Everything pictured is included. THIS CLOSEOUT PART IS NOT...HKP-99054-BNow: $87.95Was: $319.95 -
On Sale
HK417, MR762 Bolt Head, Complete - E1
H&K Heckler & Koch
Now: $536.95Was: $595.95Heckler and Koch 417 E1 Bolt Head - Complete Rare factory bolt head for the HK417. Compatible With: HK MR762 HK417HKP-22037Now: $536.95Was: $595.95 -
HK MP7 Lock Washer
H&K Heckler & Koch
$4.95H&K MP7 Lock Washer Factory lock washer for the MP7 platform. Specifications: Inside diameter: 4.10mm Outside diameter: 7.75mm Compatible With: HK MP7HKP-21978$4.95 -
On Sale
HK G3 A2 Adjustable Stock Extension - GUNSMITH SPECIAL
USA
Now: $29.95Was: $69.95G3 A2 Adjustable Stock Extension -GUNSMITH SPECIAL MISSING EXTENSION BLOCKS Please Note: Will require work before being functional. HKP recommends the work be performed by a professional gunsmith. The Condition will vary from part-to-part vs. the...HKP-00872-BNow: $29.95Was: $69.95 -
HK21, HK21E, HK23, HK23E Double Frame Front Sight Base
H&K Heckler & Koch
$66.95H&K 21/21E/23/23E Double Frame Front Sight Base Original, unissued German double frame front sight bases. These have never been welded to a cocking tube and are perfect for completing or restoring your build with factory-spec parts. Compatible...HKP-21908$66.95 -
HK21E, HK23E Left Receiver Reinforcement Rail Weldment
H&K Heckler & Koch
$14.95H&K 21E/23E Left Receiver Reinforcement Rail Weldment Genuine German-made weldment for left-side receiver reinforcement rail. Precision-machined using the correct steel and milling for you HK21E or HK23E build. Compatible With: HK21E HK23EHKP-21907$14.95 -
On Sale
HK MP5, HK91, G3, HK33 Cocking Tube End Cap - Incomplete - BLEMISHED
H&K Heckler & Koch
Now: $21.95Was: $39.95H&K Cocking Tube End Cap/Dust Cap - BLEMISHED SOLD INDIVIDUALLY - VARYING CONDITION SHOWN INCOMPLETE COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. This part...HKP-00099-BNow: $21.95Was: $39.95 -
HK MP5K Stock or Brace Adapter - .40 S&W, 10mm
HKP HK Parts
$113.95HKP HK Parts .40S&W and 10mm Brace and Stock Adapter for HK MP5K Easily attach your favorite A2 style stock to your MP5K 40, 10 with this durable, precision-engineered adapter. Made in the US and available exclusively at HK Parts. Compatible...HKP-21869$113.95 -
HK MR556 Barrel - 5.56 / .223 - 16" - Complete Upper
H&K Heckler & Koch
$989.95HK MR556 16" Complete Upper Barrel Factory HK MR556 16" barrel, complete with a factory-installed barrel nut, gas block and flash hider. Every component is brand new and meticulously crafted, guaranteeing top-notch quality. This barrel is the ultimate...HKP-21805$989.95