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) Index Plate - HKP-01860
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    HK UMP/USC/G36/SL8 (.40 S&W/.45 ACP/9mm/5.56/.223) Index Plate

    H&K Heckler & Koch

    $9.95
    HK Index Plate For All UMP, USC, G36, & SL8 Lowers Compatible With: HK UMP HK USC HK G36 HK SL8
    HKP-01860
    $9.95
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    $9.95
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  • Used - H&K USC/SL8 (.45 ACP/5.56/.223) Buttstock Screw - HKP-01649 HK USC, SL8 Buttstock Allen Screw
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    HK USC, SL8 Buttstock Allen Screw

    H&K Heckler & Koch

    $17.95
    Buttstock Allen Screw For HK USC Or HK SL8 rifles. This is the screw that holds the stock assembly onto the upper receiver of the HK USC & SL8.Great for replacements or to have as spares. This item is factory HK and a common spare.
    HKP-01649
    $17.95
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    $17.95
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  • New - H&K UMP (.40 S&W) 30 Round Magazine - HKP-00607 HK UMP (.40 S&W) 30 Round Magazine
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    HK UMP (.40 S&W) 30 Round Magazine

    H&K Heckler & Koch

    $79.95
    HK German UMP .40 cal 30 Round Factory Magazine New factory fresh production HK magazine. Compatible With: HK UMP .40 HK USC-UMP conversions LWRC SMG.40
    HKP-00607
    $79.95
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    $79.95
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  • New - HKP HK UMP (9mm ) 15 Round Magazine - HKP-17849 HK UMP 9mm  15 Round Magazine
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    HK UMP 9mm 15 Round Magazine

    HKP HK Parts

    $49.95
    UMP 9mm 15 Round Factory Magazine - USA UMP 15 round magazine for the UMP. Each magazine features steel feed lips, and a full 15 round magazine capacity. A small compact magazine for specific operational requirements. Each magazine counts as 3 U.S. Made...
    HKP-17849
    $49.95
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    $49.95
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  • Used - H&K 91/G3 (7.62x51/.308) Fixed Stock with Enhanced Heavy Buffer - Dark OD Green - Surplus - HKP-18933 HK91, G3 Fixed Stock with Enhanced Heavy Buffer - Dark OD Green - Surplus
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    HK91, G3 Fixed Stock with Enhanced Heavy Buffer - Dark OD Green - Surplus

    H&K Heckler & Koch

    $129.95
    HK 91, G3 Fixed Stock with Enhanced Heavy Buffer Installed - Dark OD Green - Surplus Used Dark Olive Drab Green German surplus stock complete with Enhance DMR buffer installed. This Stock is so dark it looks to be brown. The stock and the buttpad on this...
    HKP-18933
    $129.95
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    $129.95
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  • New - H&K MP5 & SP5 A1 End Cap With Sling Swivel - HKP-00114 HK MP5, SP5 A1 Sling Swivel End Cap
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    HK MP5, SP5 A1 Sling Swivel End Cap

    H&K Heckler & Koch

    $139.99
    HK German MP5 & SP5 A1 End Cap With Sling Swivel The MP5 end cap allows the user to add a single-point sling. Perfect for a pistol build or a lower profile setup. Made by HK Germany.  Compatible With: HK MP5 HK SP5 HK94 MP5 clones and other...
    HKP-00114
    $139.99
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    $139.99
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  • Out Of Stock
    New - HK MR556, 416 & AR15, M4 Stock - PDWC - Extended Buttpad - HKP-17800 HK MR556, 416 & AR15, M4 Stock - PDWC - Extended Buttpad HKP HK Parts HKP-17800

    HK416, MR556, AR-15 PDWC Stock - Extended Buttpad

    HKP HK Parts

    $0.00
    HK 416C Style With Extended Buttpad - PDW Stock For AR15, MR556, HK416 & M4 Models The first PDW style stock that does NOT require a proprietary bolt carrier or special components. A true drop-in PDW stock solution for your HK 416C or AR/M4 PDW...
    HKP-17800
    $0.00
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  • On Sale
    HK MP5, 90 Series Locking Plate for Rollers HK MP5, 90 Series Locking Plate for Rollers
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    HK MP5, 90 Series Locking Plate for Rollers

    Special Weapons

    Now: $3.95
    Was: $8.95
    Special Weapons HK MP5, 90 Series Locking Plate for Rollers SOLD INDIVIDUALLY This item is a common wear item that is great to have on hand as they are one of the top items that break or fail with use and age of the service weapon. Compatible With: MP5,...
    HKP-99399
    Now: $3.95
    Was: $8.95
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    Now: $3.95
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  • On Sale
    Used - HK G3 .22 20 Round Conversion Magazine - BLEMISHED - HKP-20750-B
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    HK91, G3 Conversion Magazine - .22LR - 20 Round - BLEMISHED

    H&K Heckler & Koch

    Now: $149.95
    Was: $199.95
    H&K Heckler & Koch's Conversion Magazine for HK91, G3 - Conversion Kit - 20 Round - BLEMISHED CONDITION MAY VARY. DENTS VISIBLE BUT MAGAZINES ARE STILL FUNCTIONAL. REFER TO PHOTOS TO ASCERTAIN CONDITION. Priced for ONE Conversion Magazine -...
    HKP-20750-B
    Now: $149.95
    Was: $199.95
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    Now: $149.95
    Was: $199.95
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  • HK416, MR556, MR762 Snap Hook Adapter for Slimline Buttstock - Ambi HK416, MR556, MR762 Snap Hook Adapter for Slimline Buttstock - Ambi
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    HK416, MR556, MR762 Snap Hook Adapter for Slimline Buttstock - Ambi

    H&K Heckler & Koch

    $177.95
    H&K MR556/MR762 Ambi Slimline Buttstock Snap Hook Adapter Genuine H&K snap hook adapter designed to provide ambidextrous sling attachment points for MR556 and MR762 slimline buttstocks.  Compatible With: HK416, MR556, MR223 slimline...
    HKP-22100
    $177.95
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    $177.95
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  • New - HKP .45 ACP Vertical Slot Micro Comp - Threaded 16x1 RH - HKP-22084 HKP .45 ACP Vertical Slot Micro Comp - Threaded 16x1 RH
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    HKP .45 ACP Vertical Slot Micro Comp - Threaded 16x1 RH

    HKP HK Parts

    $29.95
    HKP .45 ACP Vertical Slot Micro Comp - Threaded 16x1 RH The HK Parts micro comp & thread protector strikes a balance between a lightweight, minimalistic design and range functionality. The micro comp easily threads on to the end of any factory spec...
    HKP-22084
    $29.95
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    $29.95
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  • New - H&K HK MR556 A4 10" Handguard - HKP-21934 HK MR556 A4 Handguard - 10"
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    HK MR556 A4 Handguard - 10"

    H&K Heckler & Koch

    $259.95
    H&K HK MR556 A4 10" Handguard This 10" factory H&K MR556 A4 handguard offers a lightweight, free-floating design that enhances accuracy and provides rock-solid mounting for accessories. Made from high-strength aluminum, it features a slim profile...
    HKP-21934
    $259.95
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    $259.95
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