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 SP5K Bolt Carrier - Semi Auto - 9mm
H&K Heckler & Koch
$449.95Heckler and Koch HK SP5K 9mm Semi-Auto Bolt Carrier German-made HK SP5K bolt carrier built to the factory semi-auto SP5K specification. This carrier features the correct SP5K closed-front design and semi-auto geometry, making it the proper HK part for...HKP-18207$449.95 -
HK416, MR556 Carbine Stock - MOE - Commercial Spec
Magpul
$54.95Magpul MOE (Magpul Original Equipment) Commercial-Spec Model for AR15/M4 Carbines Made in the USA, the MOE stock Commercial-Spec Model is a drop-in replacement buttstock for AR15/M4 carbines using commercial-spec-sized receiver extension tubes. The...HKP-10629$54.95 -
HK MR762 A4 Upper Receiver Kit - 13"
H&K Heckler & Koch
$2,499.95HK MR762 A4 Upper Receiver Kit - 13" The MR762 A4 kit contains a complete upper receiver and barrel assembly. The closed system design significantly reduces malfunctions typically associated with direct-impingement gas systems, as hot carbon fouling and...HKP-22399$2,499.95 -
Picatinny Sight Mount - RMR, Holosun
HKP HK Parts
$97.95HKP HK MP5/K RMR / Holosun Picatinny Sight Mount The HKP HK MP5/K RMR / Holosun Picatinny sight mount offers a secure, low-profile platform for RMR and Holosun optics. Compatible with any firearm featuring a Picatinny rail. It ensures solid mounting,...HKP-22068$97.95 -
HK MP5 Adapter - Folding Stock
B&T Brugger & Thomet
$114.95B&T HK MP5 Adapter for Folding Stock Upgrade your MP5 platform with precision Swiss engineering. The Brügger & Thomet HK MP5 Adapter for Folding Stock is designed to provide a secure and reliable mounting interface for B&T’s...HKP-21751$114.95 -
HK UMP Flash Hider - Birdcage Style - 5/8x24
HKP HK Parts
$49.95HKP HK UMP Flash Hider - Birdcage Style - 5/8x24 We are pleased to present the HKP UMP birdcage flash hider, designed specifically for our UMP 45 parts kit. This exceptional accessory not only protects exposed threads but also enhances the overall...HKP-21579$49.95 -
HK MP5 Stock or Brace Adapter - Folding - .22 LR - Alpha
MI Midwest Industries
$419.95MI/HKP HK MP5 .22 LR Alpha Folding Brace/Stock Adapter The Midwest Industries alpha folding stock paired with the HK Parts picatinny rail adapter offers unparalleled versatility. Adjust your length of pull, cheek riser, and butt pad to your exact style...HKP-21515-M$419.95 -
HK MP5 Bolt Group - 9mm - Full Auto - Complete
H&K Heckler & Koch
$2,874.95H&K HK MP5 9mm Complete Full Auto Bolt Group This is a factory genuine HK German full auto bolt group compiled with the best German parts available for those that need the best parts on their beloved MP5. Last call on these as they are NLA and...HKP-21478$2,874.95 -
Out Of Stock
HK MP5 Barrel - 10mm - Threaded 9/16x24 with 3 Lug
RCM
$279.95RCM HK MP5 10mm Barrel - Threaded 9/16x24 Enhance the performance of your MP5 with the RCM HK MP5 10mm Barrel. This barrel is precision engineered for superior accuracy and durability. This barrel features a 9/16x24 thread and includes a thread protector...HKP-21158$279.95 -
On Sale
Bolt Knob - Fluted – Bronze
Tactical Precision MFG
Now: $19.95Was: $37.99TPM Fluted Bolt Knob – Bronze These bolt knobs can dress up any rifle with a 5/16×24 threaded bolt handle. Specifications: Dimensions:1.5″ x 7/8″ x 7/8″ Weight: 2 oz. Threading: 5/16x24HKP-20906Now: $19.95Was: $37.99 -
HK G36K Handguard - Heat Shield and Handstop - FDE
HKP HK Parts
$109.95HKP HK G36K Forearm With Hand Stop & Heat Shield HK G36K-length forearm, latest production style, with an integrated heat shield. This handguard includes a built-in hand stop, sling attachment points, and molded mounting locations for adding bottom,...HKP-19301$109.95 -
HK G36C Piston Rod - Black - Incomplete
H&K Heckler & Koch
$49.95H&K HK G36C Incomplete Gas Piston Rod - Black A must have item for HK G36C conversions from SL8's or for spares for your G36C. New HK German factory part.HKP-17009$49.95