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 HK MR556/MR762/416 Semi Auto Axle For Selector Lever - HKP-15433 HK416, MR556, MR762 Selector Lever Axle- Semi Auto
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    HK416, MR556, MR762 Selector Lever Axle- Semi Auto

    H&K Heckler & Koch

    $44.95
    H&K HK MR556/MR762/416 Semi Auto Axle For Selector Lever HK German safe, semi selector axle for the MR 556 & HK 416 family of firearms. All steel construction. Compatible With: HK MR556 HK 416 HK MR762
    HKP-15433
    $44.95
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    $44.95
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  • Out Of Stock
    New - H&K HK MR556 M-LOK 16.5" Upper Receiver Assembly - Black - HKP-17366 MR556 Upper Receiver Kit -16.5" - M-LOK

    MR556 Upper Receiver Kit -16.5" - M-LOK

    H&K Heckler & Koch

    $1,779.95
    New HK Factory German MR556 Upper Kit with M-LOK forearm Includes: Complete MR556 upper receiver with M-LOK forearm MR556 Bolt group Complete Tungsten Filled HK Buffer HK Buffer Spring One 30 Round HK Steel Maritime Magazine No FFL required as the...
    HKP-17366
    $1,779.95
    Out Of Stock
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    $1,779.95
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  • New - H&K G36/SL8 (5.56/.223) Complete Firing Pin Retaining Pin - HKP-14050 HK G36, SL8 Retaining Pin And O-Ring
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    HK G36, SL8 Retaining Pin And O-Ring

    H&K Heckler & Koch

    $11.95
    Retaining Pin For Firing Pin Complete With O-Ring Compatible With: HK G36 HK SL8
    HKP-14050
    $11.95
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  • New - H&K UMP (.40 S&W/.45 ACP/9mm) Lower Release Lever For Hammer - HKP-01890 HK UMP (.40 S&W/.45 ACP/9mm) Lower Release Lever For Hammer
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    HK UMP (.40 S&W/.45 ACP/9mm) Lower Release Lever For Hammer

    H&K Heckler & Koch

    $9.95
    HK UMP Catch Release Lever Or Trip Lever For All UMP Lowers  
    HKP-01890
    $9.95
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    $9.95
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  • New - HKP .45 ACP 5 Prong Flash Suppressor - Threaded 16x1 LH - HKP-02637 HK USP, HK45, UMP Flash Hider - .45 ACP - 5 Prong - Threaded 16x1 LH
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    HK USP, HK45, UMP Flash Hider - .45 ACP - 5 Prong - Threaded 16x1 LH

    HKP HK Parts

    $99.95
    HK USP, UMP, HK45 Flash Hider - .45 ACP - 5 Prong - Threaded 16x1 LH 5 prong flash hider for .45 ACP firearms featuring a 16x1 LH threaded barrel.  No timing/shims necessary. Compatible With the Following Firearms Threaded 16x1 LH: HK UMP/USC HK45...
    HKP-02637
    $99.95
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    $99.95
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  • Out Of Stock
    New - PTR HK G3/91 (7.62x51/.308) Locking Piece- 45 Degree - HKP-18518 HK91, G3 (7.62x51/.308) Locking Piece- 45 Degree

    HK91, G3 (7.62x51/.308) Locking Piece- 45 Degree

    PTR

    $21.95
    45 Degree Locking Piece - US Made PTR standard 45 degree locking piece made in the USA by PTR and is design to be a direct replacement for all .308 HK style firearms. Compatible With: G3 PTR 91 HK 91 Other costume clones
    HKP-18518
    $21.95
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  • On Sale
    New - HKP HK 93/53/33 (5.56/.223) AR-15 Style Brace/Stock Adapter - HKP-16255 HK33, HK53, HK93 Stock or Brace Adapter - AR-15 Style
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    HK33, HK53, HK93 Stock or Brace Adapter - AR-15 Style

    HKP HK Parts

    Now: $174.95
    Was: $199.95
    HKP HK 93/53/33 (5.56/.223) AR-15 Style Brace/Stock Adapter PTR Manufactured AR15 to HK 93,33,53 series stock adopter assembly. Each adopter unit will allow the use of AR15 stocks on your HK 93,33,53, C93/C53 or HK94, MP5 firearm. Each assembly includes...
    HKP-16255
    Now: $174.95
    Was: $199.95
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    Now: $174.95
    Was: $199.95
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  • Out Of Stock
    New - Universal Bore Cleaning Brush - 9mm/10mm/.40 S&W - HKP-00917 Barrel Bore Cleaning Brush - 9mm / 10mm / .40 S&W

    Barrel Bore Cleaning Brush - 9mm / 10mm / .40 S&W

    $13.95
    Universal Bore Cleaning Brush - 9mm/10mm/.40 S&W The HK combination brush was designed exclusively to clean the HK 9mm and 10mm fluted chamber and bore with one easy stroke. This brush has brass and stainless steel bristles. 
    HKP-00917
    $13.95
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  • New - H&K MP5/MP5K 3-Lug Blank Firing Adapter - HKP-01990 HK MP5, MP5K 3-Lug Blank Firing Adapter
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    HK MP5, MP5K 3-Lug Blank Firing Adapter

    H&K Heckler & Koch

    $169.95
    H&K MP5/MP5K 3-Lug Blank Firing Adapter This part attaches to the end of the 3-lug barrel tip and will allow the use of 9mm blanks for training. A brand new HK German manufactured part. Specifications: 3-Lug Blank Firing Adapter Compatible...
    HKP-01990
    $169.95
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    $169.95
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  • New - B&T MP5 TL-99A1 Tri-Rail Handguard - HKP-16904 B&T MP5 TL-99A1 Tri-Rail Handguard
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    B&T MP5 TL-99A1 Tri-Rail Handguard

    B&T Brugger & Thomet

    $234.95
    B&T MP5 TL-99A1 Tri-Rail Handguard   This handguard for the MP5 has a total of three NAR-Picatinny Rails; one on each side and one on the bottom.   Specifications: Color: Black Height max: 55.8 mm Length max: 164.5 mm Length of right rail:...
    HKP-16904
    $234.95
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    $234.95
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  • On Sale
    New - JMAC G36/HK33 Compensator 15F KeyMount (KeyMicro) - HKP-21254 HK G36, HK33 Compensator - 15x1 RH - KeyMount (KeyMicro)
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    HK G36, HK33 Compensator - 15x1 RH - KeyMount (KeyMicro)

    JMAC Customs

    Now: $59.95
    Was: $99.95
    JMAC G36/HK33 (5.56/.223) Recoil Reduction Device - 2 Port Compensator 15-1 Threads - KeyMount (KeyMicro) Can be permanently attached to a 14.5" barrel to achieve 16" OAL. Compatible With: HK G36C (NOT compatible with first gen. HK G36C & Tommy...
    HKP-21254
    Now: $59.95
    Was: $99.95
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    Now: $59.95
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  • New - HKP HK UMP G36 Curved Trigger - HKP-21126-M HK UMP, USC Curved Trigger
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    HK UMP, USC Curved Trigger

    HKP HK Parts

    $99.95
    HKP HK UMP & USC - Curved Trigger With our new curved trigger, you will improve the aesthetics of your firearm. Our curved trigger has spaced-out serrations at the face of the trigger for a far superior grip. Each trigger counts as one US-made...
    HKP-21126-M
    $99.95
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