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 - Omega HK UMP Rear Sight Complete - HKP-21266
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    Gideon Shadow UMP Rear Sight, Complete

    OMEGA

    $39.95
    Omega Rear Sight Complete for HK UMP All the parts needed for the rear sight on a Gideon Shadow UMP style build. New USA made parts for your build.   Will only work with Gideon Shadow. Locking screw will not work with a German UMP receiver, DEF...
    HKP-21266
    $39.95
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  • Used - H&K HK SL8-1 Complete Front Sight - Black - HKP-16633 HK SL8-1 Front Sight Complete
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    HK SL8-1 Front Sight Complete

    H&K Heckler & Koch

    $79.95
    H&K HK SL8-1 Complete Front Sight   Complete front sight, less the mounting hardware.
    HKP-16633
    $79.95
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  • Out Of Stock
    New - H&K HK MR762/HK417 Cam Pin - HKP-16844

    HK417, MR762 Cam Pin

    H&K Heckler & Koch

    $64.95
    H&K HK MR762/HK417 Cam Pin   Compatible With: HK MR762 HK 417
    HKP-16844
    $64.95
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  • Out Of Stock
    New - H&K HK MR556/416 Quad Rail w/ Flip Up Sight - Black - HKP-17710

    HK416, MR556 Handguard - Quad Rail with Flip Up Sight

    H&K Heckler & Koch

    $599.95
    HK 416A5 9" Quad Rail With Flip Up Front Sight New latest production HK 416A5, MR556 9" quad rail with integrated built in front flip up sight. Latest upgraded design with the laser markings for the adjustable gas block for suppressed and non-suppressed...
    HKP-17710
    $599.95
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  • New - HK G36/SL8 Complete Recoil Rod Assembly - HKP-18539
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    HK G36, SL8 Recoil Rod Assembly, Complete

    USA

    $39.95
    Recoil Rod Assembly For All - HK G36 & SL8 New G36/SL8 recoil rod assembly complete. Great for replacement or for a spare as these have been hard to find. Made in the USA. Compatible With: G36 SL8
    HKP-18539
    $39.95
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  • Out Of Stock
    Used - H&K G36K Parts Kit w/ Rear Hinge Section - HKP-00269

    HK G36K Parts Kit - Buttstock Hinge Section

    H&K Heckler & Koch

    $3,395.95
    G36K Parts Kit Complete With Stock Hinge Section Factory German HK G36K parts kit with the rare 3" + stock hinge section.  NOT compatible with semi-auto receivers like the S5 Tactical SA receiver without modifying the bolt.  For authentic,...
    HKP-00269
    $3,395.95
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  • Out Of Stock
    New - H&K G36/SL8 (5.56/.223) Factory Recoil Buffer - HKP-00290

    HK G36, SL8 Recoil Buffer - Factory

    H&K Heckler & Koch

    $20.95
    HK G36 Or SL8 Factory Recoil Buffer   A critical spare part as these buffers deteriorate with usage and time.    
    HKP-00290
    $20.95
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  • New - H&K UMP/USC/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Trigger - HKP-16495 HK UMP, USC, G36 Trigger
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    HK UMP, USC, G36 Trigger

    H&K Heckler & Koch

    $19.95
    HK UMP, USC & G36 Trigger New HK German factory trigger. A great spare or replacement part. Compatible With: HK G36 HK UMP HK USC
    HKP-16495
    $19.95
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  • New - H&K USC (.45 ACP) 10 Round Factory Magazine Spring - HKP-15284 HK USC Magazine Spring
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    HK USC Magazine Spring

    H&K Heckler & Koch

    $8.95
    H&K USC (.45 ACP) 10 Round Factory Magazine Spring Compatible With: HK USC 10 Round magazines
    HKP-15284
    $8.95
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  • New - H&K UMP/USC (.40 S&W/.45 ACP/9mm) Bolt Catch Spring - HKP-01900
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    HK UMP, USC Bolt Catch Spring

    H&K Heckler & Koch

    $8.95
    HK UMP & USC Bolt Catch Spring Compatible With: HK UMP HK USC
    HKP-01900
    $8.95
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  • New - H&K 21E/23E/11E (7.62x51/.308) & (5.56/.223) #9 Locking Piece - 40 Degree - HKP-00548 HK21E, HK23E, 11E Locking Piece #9 - 40 Degree
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    HK21E, HK23E, 11E Locking Piece #9 - 40 Degree

    H&K Heckler & Koch

    $149.95
    New HK German #9 Locking Piece The number 9 locking piece is 40 degrees. This will work with both .223 & .308 firearms and for custom builds and applications. This item is no longer available from HK and is out of production. Compatible With:...
    HKP-00548
    $149.95
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  • Out Of Stock
    New - HK Parts MP5SD 9mm Barrel - Threaded 18x1 - HKP-17755 HK MP5SD Barrel - 9mm - Threaded 18x1

    HK MP5SD Barrel - 9mm - Threaded 18x1

    HKP HK Parts

    $169.95
    HKP MP5SD 9mm Barrel - Threaded 18x1 Made in the USA from 416 stainless steel, this high-quality barrel undergoes the highly desirable nitride process for a super hard, durable finish. Precision milled to the latest specifications, it features...
    HKP-17755
    $169.95
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