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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  • Out Of Stock
    New - H&K HK G36/SL8 New Style Scope Rail HK German - Black - HKP-01878 HK G36, SL8 Optic Mount, Carry Handle - Picatinny Rail - New Style

    HK G36, SL8 Optic Mount, Carry Handle - Picatinny Rail - New Style

    H&K Heckler & Koch

    $274.99
    HK German HK SL8 & G36 Picatinny Scope With Rail/ Carry Handle This is the perfect mounting solution for optics. Made from the highest quality combat grade aluminum with a hard coat anodized black finish. Compatible With: G36 models SL8...
    HKP-01878
    $274.99
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    $274.99
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  • On Sale
    HK UMP, USC Optic Rail - Picatinny HK UMP, USC Optic Rail - Picatinny
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    HK UMP, USC Optic Rail - Picatinny

    H&K Heckler & Koch

    Now: $12.95
    Was: $19.95
    HK UMP, USC Optic Rail - Picatinny Factory HK UMP and USC Picatinny machined aluminum optic rail with mounting hardware. Compatible With: HK UMP, USC
    HKP-22541
    Now: $12.95
    Was: $19.95
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    Was: $19.95
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  • On Sale
    HK MP5, MKE AP5 Trigger Housing - 9mm - Contoured - 0,1 HK MP5, MKE AP5 Trigger Housing - 9mm - Contoured - 0,1
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    HK MP5, MKE AP5 Trigger Housing - 9mm - Contoured - 0,1

    MKE

    $42.95 - $59.95
    MKE AP5, HK MP5 Contoured Trigger Housing - 0,1 This contoured trigger housing is manufactured by MKE for MP5 and AP5 pattern firearms. Designed for 9mm platforms, it provides a factory-correct housing option for MP5-style trigger group assemblies...
    HKP-99361-M
    $42.95 - $59.95
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  • Picatinny Optic Mount Shield - ACRO P2, C2 - S.W.O.R.D.S Picatinny Optic Mount Shield - ACRO P2, C2 - S.W.O.R.D.S
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    Picatinny Optic Mount Shield - ACRO P2, C2 - S.W.O.R.D.S

    Frost Defense

    $239.95
    Aimpoint ACRO P-2, C-2 Optic Mount - S.W.O.R.D.S - Picatinny Mount The S.W.O.R.D.S Enhanced optic shield designed for Aimpoint ACRO P2/C2 red dot sights. This patent-pending mount system provides robust glare and impact protection by surrounding the...
    HKP-22341-M
    $239.95
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  • Out Of Stock
    HK416, MR556, HK417, MR762 Handguard Locking Screw - A4 Style HK416, MR556, HK417, MR762 Handguard Locking Screw - A4 Style

    HK416, MR556, HK417, MR762 Handguard Locking Screw - A4 Style

    H&K Heckler & Koch

    $22.95
    HK416, MR556, HK417, MR762 - A4 - Handguard Locking Screw Replacement locking screw that secures the A4 handguard to the upper receiver.  Compatible With: HK HK416 A4 HK MR556 A4 HK HK417 A4 (2 required per handguard) HK MR762 A4 (2 required...
    HKP-22304
    $22.95
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    $22.95
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  • HKP HK UMP/USC M-LOK Attachment Piece HKP HK Parts HKP-22249 HK UMP, USC M-LOK Attachment Piece
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    HK UMP, USC M-LOK Attachment Piece

    HKP HK Parts

    $29.95
    HKP HK UMP/USC M-LOK Attachment Piece Upgrade your UMP and USC with the HK Parts M-Lok attachment piece, designed to eliminate the hassle of snagging and shredding your knuckles on Picatinny rails. This exceptional set significantly expands the range of...
    HKP-22249
    $29.95
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  • New - HKP HK MP5/K RMR / Holosun Picatinny Sight Mount - HKP-22068 Picatinny Sight Mount - RMR, Holosun
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    Picatinny Sight Mount - RMR, Holosun

    HKP HK Parts

    $97.95
    HKP HK MP5/K RMR / Holosun Picatinny Sight Mount The HKP HK MP5/K RMR / Holosun Picatinny sight mount offers a secure, low-profile platform for RMR and Holosun optics. Compatible with any firearm featuring a Picatinny rail. It ensures solid mounting,...
    HKP-22068
    $97.95
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  • New - HKP HK MP5K to G3 Brace/Stock Adapter - HKP-21853 HK MP5K to G3 Stock or Brace Adapter
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    HK MP5K to G3 Stock or Brace Adapter

    HKP HK Parts

    $113.95
    HKP HK MP5K to G3 Brace/Stock Adapter The MP5K/G3 adapter enables seamless compatibility between MP5K firearms and G3-style stocks. Designed  for a  secure and sturdy connection, it's an excellent upgrade for those looking to customize or swap...
    HKP-21853
    $113.95
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  • New - PTR HK 91/G3 (7.62x51/.308) Tactical Forearm - Low Profile - HKP-21806 HK91, G3 Tactical Handguard - Low Profile
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    HK91, G3 Tactical Handguard - Low Profile

    PTR

    $109.95
    PTR HK 91/G3 (7.62x51/.308) Tactical Forearm - Low Profile Made from aircraft-grade aluminum, rock-solid, and lightweight. This forearm allows you to add up to 3 rails on your firearm. That includes the left, right, as well as bottom sides, with the...
    HKP-21806-M
    $109.95
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  • New - Nefarious Arms HK 416/MR556 14.5" A3 Barrel - HKP-21589 HK416, MR556 Barrel - 5.56 - 14.5" - Threaded 1/2"x28- A3 - Light
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    HK416, MR556 Barrel - 5.56 - 14.5" - Threaded 1/2"x28- A3 - Light

    Nefarious Arms

    $594.95
    Nefarious Arms HK 416/MR556 14.5" A3 Barrel Each Nefarious Arms barrel is cold-hammer-forged and chrome-lined for years of accurate shooting.  Grab this expertly crafted barrel for your next SBR or pistol build.  Compatible With: HK 416 A1,...
    HKP-21589
    $594.95
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    $594.95
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  • On Sale
    New - H&K HK21/FMP Drum Hanger & 100rd Drum - HKP-21509 HK21, FMP Drum and Drum Hanger - 100 Round
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    HK21, FMP Drum and Drum Hanger - 100 Round

    H&K Heckler & Koch

    Now: $997.95
    Was: $1,288.95
    HK Heckler and Koch HK21 and FMP Drum Hanger with 100 Round Drum Complete your HK21 or FMP21 build with the incredibly rare original H&K drum hanger and 100-round drum.  These components have long been discontinued and are essential for...
    HKP-21509
    Now: $997.95
    Was: $1,288.95
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    Now: $997.95
    Was: $1,288.95
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  • On Sale
    New - H&K HK 416 A5 Bolt Carrier Complete - HKP-21500 HK416 A5 Bolt Carrier - Complete
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    HK416 A5 Bolt Carrier - Complete

    H&K Heckler & Koch

    Now: $1,945.00
    Was: $2,349.95
    German H&K HK 416 A5 Bolt Carrier Complete Get your hands on that critical puzzle piece for your factory-correct 416A5 build.  Fully assembled and ready to drop into your uper receiver.  Bolt carriers may be marked ".223 Rem" or "5.56 x 45"...
    HKP-21500
    Now: $1,945.00
    Was: $2,349.95
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    Now: $1,945.00
    Was: $2,349.95
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