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 - H&K UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Safety Right Side (0,1) - HKP-01874
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    HK UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Safety Right Side (0,1)

    H&K Heckler & Koch

    $9.95
    Safe, Semi 0,1 Only HK UMP, USC, G36, & SL8 Right Side Safety Control Lever Constructed from durable black polymer, this factory original part from HK is made in Germany and specifically designed for H&K SL8, G36, and USC rifle. The lever...
    HKP-01874
    $9.95
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    $9.95
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  • New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) 3 Position Navy Full Lower (0,1,3) - HKP-00592 HK UMP 3 Position Navy Full Lower (0,1,3)
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    HK UMP 3 Position Navy Full Lower (0,1,3)

    H&K Heckler & Koch

    $1,249.95
    HK UMP 3 Position Navy Lower New German Heckler & Koch UMP 3 position (0, 1, full) Navy lower. Each lower comes complete with all the factory internals. These lowers are ideal for the USC to UMP conversion and to keep as a spare. Each lower is...
    HKP-00592
    $1,249.95
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    $1,249.95
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  • New - H&K G3/91 (7.62x51/.308) SEF Navy Style Trigger Housing - Clipped & Pinned - HKP-00513 HK91, G3 SEF Navy Style Trigger Housing - Clipped & Pinned
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    HK91, G3 SEF Navy Style Trigger Housing - Clipped & Pinned

    H&K Heckler & Koch

    $179.95
    H&K G3/91 (7.62x51/.308) SEF Navy Style Trigger Housing - Clipped & Pinned New German-made Heckler & Koch grip housing comes in black polymer clipped and pinned, ready to drop on your HK 91, HKG3, PTR-91, or other HK .308 type build. Accepts...
    HKP-00513
    $179.95
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  • On Sale
    New - GG&G Picatinny to Harris Bipod Adapter - HKP-02307 Harris Bipod Adapter - Picatinny
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    Harris Bipod Adapter - Picatinny

    GG&G

    Now: $14.95
    Was: $39.95
    Harris Bipod Adapter Made By GG&G Enables a Harris Bi-pod to attach to a mil-spec Picatinny rail. GG&G's AR-15 Harris Bipod Adapter is rugged and low profile. Features of the GG&G Bipod Adapter include a stationary standard swivel stud, a...
    HKP-02307
    Now: $14.95
    Was: $39.95
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    Now: $14.95
    Was: $39.95
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  • New - HKP Single Point Sling - ACU Digital Camo - HKP-15041 HK Single Point Sling - ACU Digital Camo
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    HK Single Point Sling - ACU Digital Camo

    HKP HK Parts

    $29.95
    HKP Single Point Sling - ACU Digital Camo HK single-point bungee sling for use on all HK & other firearm applications. This super high-quality sling is a must-have for those who prefer operating with a single-point sling over the traditional 3-point...
    HKP-15041
    $29.95
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  • New - H&K HK MR556/MR762/416/417 Flip Up Rear Sight - 2mm - FDE - HKP-18500 H&K HK MR556/MR762/416/417 Flip Up Rear Sight - 2mm - FDE H&K Heckler & Koch HKP-18500
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    HK416, MR556, HK417, MR762 Rear Sight - Flip Up 2mm - RAL8000

    H&K Heckler & Koch

    $446.95
    Heckler and Koch HK416, MR556 Flip Up 2mm Rear Sight - RAL8000 Factory HK quick change, flip up rear sight in RAL 8K with a 2mm aperture. Attaches directly to any standard Picatinny rail using a self-contained quick-attach push button system. Designed...
    HKP-18500
    $446.95
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    $446.95
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  • HK91, G3 Barrel Flute Cleaning Brush - 7.62x51 / .308 HK91, G3 Barrel Flute Cleaning Brush - 7.62x51 / .308
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    HK91, G3 Barrel Flute Cleaning Brush - 7.62x51 / .308

    HKP HK Parts

    $19.95
    HKP HK Cleaning Brush - Barrel Flute - .30 Cal - 7.62x51 / .308 This brush is a must-have for cleaning the chamber flutes on a G3/91-style firearm. If the flutes become clogged or dirty, the firearm will cease to extract properly and render your HK...
    HKP-22317
    $19.95
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  • On Sale
    New - MKE HK MP5 Rear Sights Locking Washer - HKP-22240
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    HK MP5 Rear Sights Locking Washer

    MKE

    Now: $1.95
    Was: $2.45
    MKE HK MP5 Rear Sights Locking Washer Secures the rear sight assembly on MKE and HK MP5 models to maintain proper alignment. Compatible With: Century Arms AP5 HK MP5/MP5K HK SP5/SP5K Will work with all 90 series firearms
    HKP-22240
    Now: $1.95
    Was: $2.45
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    Now: $1.95
    Was: $2.45
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  • New - HKP HK 91/G3 Extractor - Enhanced Coated Polish - HKP-22182-M HK91, G3 Extractor - Enhanced Coated Polish
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    HK91, G3 Extractor - Enhanced Coated Polish

    HKP HK Parts

    $24.95
    HKP HK 91/G3 Extractor - Enhanced Coated Polish  Built for dependable performance, this polished and coated extractor delivers smooth cycling and consistent extraction. A great choice for both upgrades and routine replacements. Compatible With: HK...
    HKP-22182-M
    $24.95
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  • New - H&K 417/MR762 A4 Bolt Catch/Release - Ambi - HKP-21960 HK417, MR762A4 Bolt Catch, Release - Ambi
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    HK417, MR762A4 Bolt Catch, Release - Ambi

    H&K Heckler & Koch

    $53.95
    Heckler and Koch MR762 A4 Bolt Catch/Release - Ambi Factory ambidextrous bolt catch lever for the MR762 A4.  The A4 variant of the MR762 introduced ambi controls for the bolt catch/release not previously available on the A1 variant...
    HKP-21960
    $53.95
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    $53.95
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  • New - MKE Century Arms AP51 A3 Retractable Stock - HKP-21926 Century Arms AP51 Retractable Stock - A3
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    Century Arms AP51 Retractable Stock - A3

    MKE

    $449.95
    MKE Century Arms AP51 A3 Retractable Stock Factory new MKE stock professionally converted to fit the AP51 rifles and pistols. This AP51 stock was modified to the correct length recoil rod to make it a true drop in stock. Only offered here at HK Parts...
    HKP-21926
    $449.95
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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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    $1,299.95
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