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 - Magpul / HKP HK MP5 SSTG - HKP-21261-M HK MP5, SP5 Trigger Group - Single Stage - SSTG
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    HK MP5, SP5 Trigger Group - Single Stage - SSTG

    Magpul

    Now: $499.95
    Was: $639.95
    SSTG Magpul trigger group The Single Stage Trigger Group is a blend between the past and future. The trigger pack begins life as a factory German trigger pack before being professionally converted into a semi-auto trigger pack. After the conversion, each...
    HKP-21261
    Now: $499.95
    Was: $639.95
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    Now: $499.95
    Was: $639.95
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  • New - HK UMP .45 15 Round Magazine Spring - HKP-20679 HK UMP 45 Magazine Spring - .45 ACP - 15 Round - US
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    HK UMP 45 Magazine Spring - .45 ACP - 15 Round - US

    HKP HK Parts

    $9.95
    HK UMP .45 15 Round Magazine Spring Perfect for spares and to have on hand as these are consumable item that needs to be replaced from time to time. A must have item if you own a USC/UMP conversion or UMP.
    HKP-20679
    $9.95
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    $9.95
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  • On Sale
    New - KDG HK MR556 10" M-LOK Rail System - Black - HKP-19246 HK MR556 Rail System - 10" - M-LOK
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    HK MR556 Rail System - 10" - M-LOK

    KDG Kinetic Development Group

    Now: $279.95
    Was: $374.95
    KDG HK MR556 10" M-LOK Rail System Direct-mount rail system designed to replace the factory HK MR556 handguard. Features a continuous monolithic Picatinny rail at the 12 o’clock position and M-LOK mounting slots at the 3, 6, and 9 o’clock...
    HKP-19246
    Now: $279.95
    Was: $374.95
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    Now: $279.95
    Was: $374.95
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  • HK G36C, SL8 Flash Hider - 4 Prong - Threaded 15x1 RH
HK G36C, SL8 Flash Hider - 4 Prong - Threaded 15x1 RH
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    HK G36C, SL8 Flash Hider - 4 Prong - Threaded 15x1 RH

    GSG9

    $86.95
    GSG9 4 Prong Flash Hider - 15x1 RH Finest quality 4-prong flash hider that is threaded 15x1 right-hand twist (factory HK thread pitch). Perfect for the SL8, G36C, or other type of HK conversion. It also counts as one US-made part for 922R compliance...
    HKP-00631
    $86.95
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    $86.95
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  • New - Wasatch Arms Keymount Muzzle Brake - Threaded 5/8x24 - HKP-20298 Keymount Muzzle Brake - Threaded 5/8x24
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    Keymount Muzzle Brake - Threaded 5/8x24

    Wasatch Arms

    $89.95
    Wasatch Arms Keymount Muzzle Brake - Threaded 5/8x24 The Wasatch Arms keymount brake is compatible with the Dead Air keymount system. The brake has no outisde flats, so there is no need for timing shims or crush washers...
    HKP-20298
    $89.95
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    $89.95
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  • New - JMAC Customs TS-8 w/ 1913 Folding Mech - HKP-20145 Triangle Stock - TS-8 with 1913 Folding Mech
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    Triangle Stock - TS-8 with 1913 Folding Mech

    JMAC Customs

    $299.95
    JMAC Customs TS-8 w/ 1913 Folding Mech Triangle stock 8" with our 1913 folding mech (not assembled) 2x integrated QD sling socket 8" length Drilled and tapped for optional cheek risers (will be available in the future) Compatible with SIG folding...
    HKP-20145
    $299.95
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    $299.95
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  • New - Surefire Procomp AR Rifles (7.62x51/.308) Muzzle Brake - Threaded 5/8x24 RH - HKP-19486 Procomp AR Rifles Muzzle Brake - 7.62x51 / .308 - Threaded 5/8x24 RH
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    Procomp AR Rifles Muzzle Brake - 7.62x51 / .308 - Threaded 5/8x24 RH

    Surefire

    $95.00
    Surefire Procomp AR Rifles (7.62x51/.308) Muzzle Brake - Threaded 5/8x24 RH The SureFire PROCOMP muzzle brake is designed for AR10/LR308 rifles and variants with 5/8x24 muzzle threads. It significantly reduces recoil impulse and features neutral porting...
    HKP-19486
    $95.00
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    $95.00
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  • New - H&K HK MR762 Bolt Carrier - HKP-16626 HK417, MR762 Bolt Carrier
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    HK417, MR762 Bolt Carrier

    H&K Heckler & Koch

    $519.95
    H&K HK MR762 Bolt Carrier New HK German production. Compatible With: HK MR762A1, A4 HK 417
    HKP-16626
    $519.95
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    $519.95
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  • New - H&K HK MR762/417 Handguard Grooved Pin - HKP-16822
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    HK417, MR762 Handguard Pin - Grooved

    H&K Heckler & Koch

    $11.95
    H&K HK MR762, 417 Handguard Grooved Pin   Hechler & Koch grooved pin for HK MR762 and HK 417 handguards.   Compatible With: HK MR762 HK417
    HKP-16822
    $11.95
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  • HK MR556 Bolt Head, Complete HK MR556 Bolt Head, Complete
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    HK MR556 Bolt Head, Complete

    H&K Heckler & Koch

    $384.95
    H&K HK MR556 A1 Complete Bolt Head Brand new factory German bolt head with all the components to make the bolt head complete. Compatible With: HK MR556 A1/A4
    HKP-02712
    $384.95
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    $384.95
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  • New - HKP HK MR556/416 DMR KeyMod Extended 15" Handguard - Black - HKP-18020
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    HK416, MR556 DMR KeyMod Extended 15" Handguard

    HKP HK Parts

    $249.95
    HKP HK MR556/416 DMR KeyMod Extended 15" Handguard
    HKP-18020
    $249.95
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    $249.95
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  • New - H&K HK MR556/MR762/416/417 Stock Release Lever Pin - HKP-16860
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    HK416, MR556, HK417, MR762 Buttstock Release Lever Pin

    H&K Heckler & Koch

    $6.95
    HK 416  & MR556 E1/E2 & HK 417, MR762 Stock Release Lever Pin Brand new factory German production. A must have spare part that should be replaced each time you remove or install the roll pin. Made in Germany.
    HKP-16860
    $6.95
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    $6.95
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