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 MR762 A4/417 Magazine Catch - HKP-21961 HK417, MR762A4 Magazine Catch
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    HK417, MR762A4 Magazine Catch

    H&K Heckler & Koch

    $99.95
    H&K MR762 A4/417 Magazine Catch German-made magazine catch for MR762 A4 and HK417. Compatible With: HK MR762 A1/A4 HK417  
    HKP-21961
    $99.95
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    $99.95
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  • New - H&K HK MR556 A4 Complete Upper w F/A & Ejection Door - HKP-21929 HK MR556 A4 Complete Upper - F/A & Ejection Door
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    HK MR556 A4 Complete Upper - F/A & Ejection Door

    H&K Heckler & Koch

    $845.95
    H&K HK MR556 A4 Complete Upper w F/A Ejection Door The H&K MR556 A4 Complete Upper is a superior factory assembly that comes fully equipped with a forward assist and an ejection port door, providing unparalleled reliability and precision. This...
    HKP-21929
    $845.95
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    $845.95
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  • New - HKP HK MP5K .40/10mm Folding Stock with Adapter - HKP-21893 HK MP5K .40/10mm Folding Stock with Adapter
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    HK MP5K .40/10mm Folding Stock with Adapter

    HKP HK Parts

    $239.95
    HKP HK MP5K .40/10mm Folding Stock with Adapter Genuine H&K UMP folding stock completely assembled with the HK Parts stock adapter. CNC machined aircraft grade aluminum with QD sling attachment point. Available exclusively at HK Parts. Compatible...
    HKP-21893
    $239.95
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    $239.95
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  • On Sale
    New - HK MP5 Oversized 100 Degree Standard Locking Piece - BLEMISHED - Gunsmith Special - HKP-99116 HK MP5 Oversized 100 Degree Standard Locking Piece - BLEMISHED - Gunsmith Special
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    HK MP5 Oversized 100 Degree Standard Locking Piece - BLEMISHED - Gunsmith Special

    USA

    Now: $9.95
    Was: $33.95
    HK MP5 Oversized 100 Degree Standard Locking Piece - BLEMISHED - Gunsmith Special This US-made MP5 100 degree locking piece is the correct locking piece for all HK MP5-style forearms. This locking piece has also now become the factory correct locking...
    HKP-99116
    Now: $9.95
    Was: $33.95
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    Now: $9.95
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  • New - H&K HK21E/23E Inner & Outer Buffer Compression Springs - HKP-21856 HK21E, HK23E Compression Springs - Inner Buffer, Outer Buffer
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    HK21E, HK23E Compression Springs - Inner Buffer, Outer Buffer

    H&K Heckler & Koch

    $59.95
    H&K HK21E/23E Inner & Outer Buffer Compression Springs An unissued set of inner and outer buffer compression springs for your HK21E/23E buffer, sourced directly from HK Germany. Most HK21E/23E buffers in the U.S are first-generation, which use...
    HKP-21856
    $59.95
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    $59.95
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  • New - HKP HK MP5K .40/10mm Brace with Brace/Stock Adapter - HKP-21835 HK MP5K Brace and Stock or Brace Adapter - 10mm / .40
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    HK MP5K Brace and Stock or Brace Adapter - 10mm / .40

    HKP HK Parts

    $239.95
    HKP HK MP5K .40/10mm Brace with Brace/Stock Adapter Designed to adapt UMP style and SB Tactical braces directly to the 40/10 K platform. Made in the USA and available exclusively at HK Parts Compatible With: HK MP5K .40/10mm
    HKP-21835
    $239.95
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    Qty in Cart: 0
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    $239.95
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  • New - H&K HK G3 Front Sight Ring - HKP-21641
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    HK G3 Front Sight Ring

    H&K Heckler & Koch

    $7.95
    H&K HK G3 Front Sight Ring Factory HK replacement front sight ring. Compatible With: HK G3
    HKP-21641
    $7.95
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    $7.95
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  • On Sale
    New - AIM HK 91/G3 (7.62x51/.308) Extended Carbine Length Handguard - M-LOK - BLEMISHED - HKP-18172-B HK91, G3 Extended Carbine Length Handguard - M-LOK - BLEMISHED
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    HK91, G3 Extended Carbine Length Handguard - M-LOK - BLEMISHED

    AIM

    Now: $51.95
    Was: $74.95
    AIM HK 91/G3 (7.62x51/.308) Extended Carbine Length Handguard - M-LOK - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The most innovative and modular...
    HKP-18172-B
    Now: $51.95
    Was: $74.95
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    Now: $51.95
    Was: $74.95
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  • New - RCM HK MP5 & MP5K 40/10 SD 120 Degree Locking Piece - HKP-21524 HK MP5, MP5K 40/10 SD 120 Degree Locking Piece
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    HK MP5, MP5K 40/10 SD 120 Degree Locking Piece

    RCM

    $44.95
    RCM HK MP5 & MP5K 40/10 SD 120 Degree Locking Piece Compatible With:  MP5/K 10  MP5/K 40 
    HKP-21524
    $44.95
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    $44.95
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  • Out Of Stock
    New - H&K HK MR762 Factory Flash Hider - 15x1 RH - HKP-21481 HK MR762 Factory Flash Hider - 15x1 RH

    HK MR762 Factory Flash Hider - 15x1 RH

    H&K Heckler & Koch

    $54.95
    H&K HK MR762 Factory Flash Hider - 15x1 RH Factory flash hider with 15x1 right-hand threads. Perfect for completing a build or replacing a worn or missing part. Compatible With: HK MR762  
    HKP-21481
    $54.95
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    $54.95
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  • On Sale
    New - TPM - Remington 700 - 30 MOA - Scope Base Long Action -Tungsten - HKP-20772 Remington 700 - 30 MOA - Scope Base Long Action -Tungsten
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    Remington 700 - 30 MOA - Scope Base Long Action -Tungsten

    Tactical Precision MFG

    Now: $38.95
    Was: $76.99
    TPM Remington 700 Scope Base Long Action 30 MOA These tight tolerance, bomb proof scope rail allow the shooter to make best use of the scope's elevation adjustment for those long-range shots and engagements with 30 MOA options and will match factory...
    HKP-20772
    Now: $38.95
    Was: $76.99
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    Now: $38.95
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  • Out Of Stock
    New - H&K HK 416 & HK MR556 Assembly Wrench Tool - HKP-20616 HK416, MR556 Assembly Wrench Tool

    HK416, MR556 Assembly Wrench Tool

    H&K Heckler & Koch

    $699.95
    H&K HK 416 & HK MR556 Assembly Wrench Tool Factory HK German multi-tool for the HK416 and MR556. The perfect tool for a complete breakdown. 
    HKP-20616
    $699.95
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    $699.95
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