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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On Sale
HK91, G3, PTR Bolt Head - Complete - Used
EBO
Now: $89.95Was: $99.95EBO HK G3 & HK 91 & PTR Bolt Head Complete - Used Greek HK Contract Date Coded EBO bolt head is manufactured in Greece by Hellenic Arms Industry, utilizing HK tooling and prints. Since the 1980s, it has proven to be one of the best upgrades for...Now: $89.95Was: $99.95 -
On Sale
HK MP5 3 Round Burst Trigger Housing - USED SURPLUS
H&K Heckler & Koch
Now: $134.21Was: $299.95HK MP5 3 Round Burst Trigger Housing - USED SURPLUS This housing is for the HK MP5 with a 3 round burst pictogram. Compatible With: HK MP5 THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN, REFUND, OR EXCHANGE. SALE IS FINAL.Now: $134.21Was: $299.95 -
On Sale
HK91, G3, PTR Magazine Spring - 5 Round
H&K Heckler & Koch
Now: $20.66Was: $22.95H&K 91/G3/MSG90 5 Round Magazine Spring This factory HK spring is designed for the 5-round HK91, G3, and MSG90 magazines. Built for durability and reliable feeding, it's an essential replacement part to keep your magazine in top condition. Compatible...Now: $20.66Was: $22.95 -
On Sale
HK MP5K Stock or Brace Adapter - 10mm / .40 S&W
HKP HK Parts
Now: $103.96Was: $129.95HKP HK MP5K .40/10mm Brace/Stock Adapter Add your favorite brace or stock to your 40 or 10mm MP5K with the HK Parts stock adapter. Designed to adapt UMP style and B&T folding stocks directly to the 40/10 K platform. Made in the USA and...Now: $103.96Was: $129.95 -
On Sale
HK21 Sling Mount for Barrel Shroud
H&K Heckler & Koch
Now: $35.06Was: $38.95Heckler and Koch Barrel Shroud Sling Mount for your HK21 Features: German-made spring steel sling clip Designed for the HK21 and HK21-A1 barrel shroud Correct HK production part for a secure sling attachment Compatible With: HK21, HK21-A1 HK21E,...Now: $35.06Was: $38.95 -
On Sale
HK MR556 Barrel - 5.56 / .223 - 16" - Complete Upper
H&K Heckler & Koch
Now: $890.96Was: $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...Now: $890.96Was: $989.95 -
On Sale
HK G3, G36 Side Rail - Short
B&T Brugger & Thomet
Now: $37.80Was: $42.00B&T HK G3/HK91, G36, MP7 Side Rail - Short Swiss made B&T short side rail for the B&T quad rail handguard. Compatible With B&T Handguards For: HK91/G3 G36 MP7Now: $37.80Was: $42.00 -
On Sale
HK UMP, USC 4 Piece M-LOK Set - Cerakote
HKP HK Parts
Now: $111.96Was: $139.95HKP HK UMP/USC 4 Piece M-LOK Set - Cerakote Upgrade your UMP/USC with the HK Parts 4-piece M-LOK set. This kit significantly expands the range of attachments you can add to your UMP/USC receiver, making it the ultimate choice for customization. Crafted...Now: $111.96Was: $139.95 -
On Sale
HK G3 Brass Catcher
B&T Brugger & Thomet
Now: $223.46Was: $385.00B&T HK G3 Brass Catcher THIS CLOSEOUT PART IS NOT ELIGIBLE FOR RETURN, REFUND, OR EXCHANGE. SALE IS FINAL. Mounts to B&T tri-rail handguard (BT-21042) which is no longer available from B&T. The B&T HK G3 brass catcher is a...Now: $223.46Was: $385.00 -
On Sale
HK 940 Barrel - .30-06
H&K Heckler & Koch
Now: $412.46Was: $948.95Heckler and Koch HK 940 .30-06 Rifle Barrel Genuine new HK 940 .30-06 barrel featuring date code and Ulm antler proof. These barrels are unfired and fully nitrided for a lifetime of use. These barrels are very rare and no longer in production...Now: $412.46Was: $948.95 -
On Sale
HK MP5K Barrel - .40 S&W - Threaded 14x.75 with 3 Lug
RCM
Now: $251.95Was: $279.95RCM HK MP5K .40 S&W Barrel - Threaded 14x.75 - 3-Lug This is the ultimate US-made barrel for any new or conversion build for the MP5K .40 cal. Crafted from top-grade CHF 41v40 material, it’s machined to impeccable standards. With the correct...Now: $251.95Was: $279.95 -
HK G36, MP7 Picatinny Side Rail
B&T Brugger & Thomet
$57.95B&T HK G36/MP7 Picatinny Side Rail Comes with all mounting hardware. Each rail is sold individually. Compatible With: HK G36 HK MP7 Specs: 127mm length$57.95