HK Rifle / SMG Parts

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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  • New - HKP UMP Recoil Rod Spring - HKP-22089
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    HK UMP Recoil Rod Spring

    HKP HK Parts

    $9.95
    HKP UMP Recoil Rod Spring Upgrade or replace your UMP recoil system with this high-quality recoil rod spring from HK Parts. Whether you're maintaining a factory setup or enhancing a custom build, the HKP recoil rod spring is a perfect fit for UMP-style...
    HKP-22089
    $9.95
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    $9.95
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  • On Sale
    Used - H&K UMP (.45 ACP) 25 Round Magazine - German LEO Markings - LIKE NEW - HKP-17917-B HK UMP (.45 ACP) 25 Round Magazine - German LEO Markings - LIKE NEW
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    HK UMP (.45 ACP) 25 Round Magazine - German LEO Markings - LIKE NEW

    H&K Heckler & Koch

    Now: $172.34
    Was: $229.95
    H&K UMP (.45 ACP) 25 Round Magazine - German LEO Markings - LIKE NEW Like-new PD trade in HK German UMP .45 cal 25 Round Factory Magazines. These magazines will fit all UMP factory firearms as well as the USC's that have been converted to accept UMP...
    HKP-17917-B
    Now: $172.34
    Was: $229.95
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    Now: $172.34
    Was: $229.95
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  • Out Of Stock
    New - Nefarious Arms HK MR556/416 10.4" A5 Barrel - HKP-21873 HK416, MR556 Barrel - 5.56 - 10.4" - Threaded 1/2"x28 - A5

    HK416, MR556 Barrel - 5.56 - 10.4" - Threaded 1/2"x28 - A5

    Nefarious Arms

    $594.95
    Nefarious Arms HK MR556416 10.4" A5 Barrel An expertly crafted 10.4" barrel designed for the HK MR556 and 416 platforms. Featuring the A5 profile, this barrel balances durability and weight, making it an excellent choice for both tactical and...
    HKP-21873
    $594.95
    Out Of Stock
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    $594.95
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  • New - HKP HK MP5K .40/10 Stock Adapter with Stock - HKP-21834 HK MP5K Stock and Stock or Brace Adapter 10mm / .40 S&W
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    HK MP5K Stock and Stock or Brace Adapter 10mm / .40 S&W

    HKP HK Parts

    $289.95
    HKP HK MP5K .40/10mm Stock Adapter with Stock Designed to adapt UMP style and B&T folding stocks directly to the .40/10mm K platform. Made in the USA and available exclusively at HK Parts Compatible With: HK MP5K .40/10mm
    HKP-21834
    $289.95
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    $289.95
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  • Out Of Stock
    New - B&T Bipod (Polymer) - Picatinny Mount - Rubber Feet - HKP-21773 Picatinny Bipod Mount - Polymer - Rubber Feet

    Picatinny Bipod Mount - Polymer - Rubber Feet

    B&T Brugger & Thomet

    $145.00
    B&T Bipod (Polymer) - Picatinny Mount - Rubber Feet Genuine B&T bipod with NAR adapter (Picatinny mount) for use on any firearm featuring a Picatinny bottom rail. 
    HKP-21773
    $145.00
    Out Of Stock
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    $145.00
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  • Out Of Stock
    New - B&T 5.56 Rotex-SF Titanium HUB Adapter - HKP-21713 B&T 5.56 Rotex-SF Titanium HUB Adapter

    B&T 5.56 Rotex-SF Titanium HUB Adapter

    B&T Brugger & Thomet

    $275.00
    B&T 5.56 Rotex-SF Titanium HUB Adapter The B&T Rotex-SF HUB is a durable mounting system compatible with all 1.375x24TPI "HUB" suppressors. The HUB easily threads into compatible suppressors and can be secured with a spanner wrench or...
    HKP-21713
    $275.00
    Out Of Stock
    Qty in Cart: 0
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    $275.00
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  • New - H&K HK G36/SL8 Sling/Bipod Eye Bolt - HKP-21654 HK G36, SL8 Handguard Eye Bolt - Slings, Bipods
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    HK G36, SL8 Handguard Eye Bolt - Slings, Bipods

    H&K Heckler & Koch

    $79.95
    H&K HK G36/SL8 Sling/Bipod Eye Bolt Factory HK sling and bipod eye bolt for H&K G36 and SL8 rifle models.  Steel construction with a durable black finish.  Installs easily into the forward portion of the handguard to provide a secure...
    HKP-21654
    $79.95
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    $79.95
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  • New - MI Blast Can 5/8-24 Thread - HKP-21536 MI Blast Can 5/8-24 Thread
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    MI Blast Can 5/8-24 Thread

    MI Midwest Industries

    $38.95
    MI Blast Can 5/8x24 Thread Compatible With: HK 91/G3 HK MR762 HK 23/21/11 HK MSG90 HK PSG1 Specifications: Directs muzzle blast forward on short barrel rifles and pistols. Does not reduce recoil or flash. Constructed from 6061 aluminum, and hardcoat...
    HKP-21536
    $38.95
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    $38.95
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  • HK23E, HK21E Rear Sight Base HK23E, HK21E Rear Sight Base
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    HK23E, HK21E Rear Sight Base

    H&K Heckler & Koch

    $193.95
    H&K HK21E/HK23E Rear Sight Base Genuine HK German rear site base.  Requires post installation machining to accommodate a scope. Compatible With: HK21E HK23E
    HKP-21508
    $193.95
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    $193.95
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  • New - H&K / HKP V51 Fixed Stock - HKP-21270-M Vector Arms V51 Fixed Stock
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    Vector Arms V51 Fixed Stock

    HKP HK Parts

    $279.95
    H&K / HKP V51 Fixed Stock HK Parts A2 style stocks for the Vector V51 platform. We start with a like-new backplate and convert it into a V51 collapsible style and pair it with a like-new, hand-picked stock.  The result, a complete A2 stock that...
    HKP-21270-M
    $279.95
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    $279.95
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  • New - HKP MP5K SD Shroud and Handguard (Rubber Grip Only) - HKP-20951 HK MP5KSD Rubber Grip Only - Barrel Shroud Handguard
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    HK MP5KSD Rubber Grip Only - Barrel Shroud Handguard

    HKP HK Parts

    $179.95
    HK Parts replacement rubber grip for HK MP5KSD Barrel Shroud and Handguard (Rubber Grip Only) Perfect size handguard to pair with the HKP MP5K SD shrouds. Engages perfectly on the machined lugs of our MP5K SD shrouds.  Available exclusively at HK...
    HKP-20951
    $179.95
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    $179.95
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  • Used - 30 Round Magazine - LEO Marked - Windowless - HK UMP .40 - HKP-20749 HK UMP Magazine - .40 ACP - 30 Round - LEO Marked
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    HK UMP Magazine - .40 ACP - 30 Round - LEO Marked

    H&K Heckler & Koch

    $99.95
    Rare Surplus 30 Round Magazine - LEO Marked - Windowless - UMP .40 S/W Rare UMP .40 windowless magazine with LEO markings. Highly unique magazines as these were "early production" magazines that were used before they switched over to the windowed UMP...
    HKP-20749
    $99.95
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    $99.95
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