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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  • On Sale
    New - MI/HKP HK MP5K Alpha Folding Brace/Stock Adapter - HKP-21514-M HK MP5K Folding Stock With Direct Fit Adapter
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    HK MP5K Folding Stock With Direct Fit Adapter

    MI Midwest Industries

    Now: $369.95
    Was: $419.95
    HK MP5K Folding Stock With Direct Fit 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 of...
    HKP-21514-M
    Now: $369.95
    Was: $419.95
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    Now: $369.95
    Was: $419.95
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  • Out Of Stock
    New - DTAC HK MP5SD Front End Kit - HKP-21318 New - DTAC HK MP5SD Front End Kit - HKP-21318

    HK MP5 to MP5SD Front End Conversion Kit

    DTAC Dakota Tactical

    $1,299.95
    Dakota Tactical HK MP5SD Front End Kit If you have wanted to convert that MP5 or SP5 to an SD but didn't know where to start, look no further.  Our kit provides all necessary components (aside from suppressor) to do so. With a DTAC Cage and SD guard...
    HKP-21318
    $1,299.95
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  • New - JMAC Universal Picatinny 8" Stock with 1913 Folding Mech - HKP-21241-M Picatinny  8" Stock with 1913 Folding Mech
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    Picatinny 8" Stock with 1913 Folding Mech

    JMAC Customs

    $304.90 - $309.90
    JMac 8" Stock with 0.275" Cheek Rise - 1913 Attachment Feautures: New Integrated Rubber Buttpad 2x Integrated QD Sling Socket 8" Length 0.275" Cheek Rise Drilled and tapped for optional cheek risers Compatible with JMAC & SIG folding mechanisms 7075...
    HKP-21241-M
    $304.90 - $309.90
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  • New - B&T MP9/TP9 Case - HKP-21084 B&T MP9, TP9 Case
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    B&T MP9, TP9 Case

    B&T Brugger & Thomet

    $199.95
    B&T Carrying Case and MP9 and TP9 B&T factory issue MP9 and TP9 carrying cases.  These cases are no longer in production or available from any other vendors.  A limited quantity is available. Get yours before they are all...
    HKP-21084
    $199.95
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  • New - HKP HK UMP & HK USC Extended Top Rail For Optics - HKP-21048 HK UMP, USC Top Rail - Extended - Optics
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    HK UMP, USC Top Rail - Extended - Optics

    HKP HK Parts

    $59.95
    HKP HK UMP & HK USC Extended Top Rail For Optics Nearly an 1" longer than the standard length top rail for mounting any Picatinny mount optic.  Made in the USA from 6061 aluminum and hard coat anodize in a beutiful black finish. 
    HKP-21048
    $59.95
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  • Used - G3 Incomplete Backplate - Threaded - HKP-20860 HK91, G3 Backplate, Incomplete
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    HK91, G3 Backplate, Incomplete

    H&K Heckler & Koch

    $29.95
    G3 Incomplete Backplate Each backplate is refinished and parkerized as issued to the German military. This refinished backplate comes with a threaded end to accept a threaded recoil rod stop screw. With a quick and easy removable recoil rod stop you will...
    HKP-20860
    $29.95
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  • HK G36C Folding Stock HK G36C Folding Stock
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    HK G36C Folding Stock

    HKP HK Parts

    $119.95
    HKP HK G36C Folding Stock HK G36C 9.5" rear stock assembly. One full inch shorter than the standard G36 and G36K stock. This is the preferred stock for average height shooters. Compatible With: G36, G36K, G36C, G36E SL8 to G36 builds In-spec clones and...
    HKP-19299-M
    $119.95
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  • New - GSG9 HK G36 Complete Semi-Auto Bolt Group - Black - HKP-18944 HK G36 Bolt Group - Semi-Auto - Complete
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    HK G36 Bolt Group - Semi-Auto - Complete

    GSG9

    $799.95
    GSG9 - HK G36 Semi-Auto Bolt Group Compatible With: HK G36 HK G36K HK G36C This will not work with a HK SL8.
    HKP-18944
    $799.95
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  • HK MP5 Bolt Carrier - 9mm - Red HK MP5 Bolt Carrier - 9mm - Red
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    HK MP5 Bolt Carrier - 9mm - Red

    HKP HK Parts

    $189.95
    Bolt Carrier F/A - 9mm - HK Red - MP5 Machined completely from billet ordnance steel. This carrier is made to the latest specs and is Tungsten filled, and heat-treated providing the finest American made carrier available.  This carrier has been...
    HKP-19535
    $189.95
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  • New - H&K HK MR762/417/G28 Firing Pin - HKP-16613
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    HK417, MR762, G28 Firing Pin

    H&K Heckler & Koch

    $64.95
    H&K HK MR762/417/G28 Firing Pin This firing pin is a must have wear and tear replacement item for your MR762 or HK 417 Firearm. Compatible With: MR762 HK 417 G28
    HKP-16613
    $64.95
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  • New - H&K HK G36/G36K Gas Block - HKP-16351 HK G36, G36K Gas Block
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    HK G36, G36K Gas Block

    H&K Heckler & Koch

    $99.95
    HK G36E, G36K - Gas Block - German HK The real deal. HK German G36E, G36K Factory Gas Block. New uninstalled. Compatible With: SL8 Other G36 variants and custom builds and projects
    HKP-16351
    $99.95
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  • New - H&K G36/SL8 (5.56/.223) Bolt Group Fork - HKP-01859
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    HK G36, SL8 Bolt Group Fork

    H&K Heckler & Koch

    $12.95
    HK G36 & SL8 Bolt Group Fork For Cocking Handle  
    HKP-01859
    $12.95
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