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
    Used - H&K 21 (7.62x51/.308) Firing Pin - USED - BLEMISHED - HKP-00546-B
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    HK21 Firing Pin - USED - BLEMISHED

    H&K Heckler & Koch

    Now: $39.95
    Was: $79.95
    H&K 21 (7.62x51/.308) Firing Pin - USED - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. Compatible With: HK21
    HKP-00546-B
    Now: $39.95
    Was: $79.95
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    Now: $39.95
    Was: $79.95
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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
    Was: $33.95
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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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    $239.95
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  • New - JMac Customs 360HD 1/2-28 FD Facemount KeyMount (KeyMicro) - HKP-21825 HK416, MR556 Facemount KeyMount (KeyMicro) - 360HD 1/2-28 FD
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    HK416, MR556 Facemount KeyMount (KeyMicro) - 360HD 1/2-28 FD

    JMAC Customs

    $124.95
    JMac Customs 360HD 1/2-28 FD Facemount KeyMount (KeyMicro) The JMac Customs 360HD is a high-performance muzzle device designed for superior durability, recoil mitigation, and compatibility with suppressors. Engineered with 360° ports for optimal...
    HKP-21825
    $124.95
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    $124.95
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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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  • New - HKP MP5 Parts Kit - Tactical Package - HKP-21495 HK MP5 Parts Kit - Tactical Package
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    HK MP5 Parts Kit - Tactical Package

    HKP HK Parts / Heckler & Koch

    $2,199.95
    HKP MP5 Parts Kit Tactical package Vintage flavor with modern flare. Our team set out to strike a symbiotic balance of classic MP5 with modern accessories delivered at an affordable price.  The result is a build kit comprised of vetted components...
    HKP-21495
    $2,199.95
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    $2,199.95
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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
    Out Of Stock
    Qty in Cart: 0
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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
    Was: $76.99
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