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 G36 Guide Rod Set Screw - HKP-01873
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    HK G36 Guide Rod Set Screw

    H&K Heckler & Koch

    $9.95
    HK G36 Guide Rod Set Screw Replacement guide rod set screw for HK G36 platforms. Designed to secure the guide rod assembly within the bolt carrier group during proper installation and maintenance. Compatible With: G36  
    HKP-01873
    $9.95
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    $9.95
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  • New - H&K G36/SL8 (5.56/.223) Bolt Hold Open Catch - HKP-16378 HK G36, SL8 Bolt Hold Open Catch
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    HK G36, SL8 Bolt Hold Open Catch

    H&K Heckler & Koch

    $59.95
    H&K G36/SL8 (5.56/.223) Bolt Hold Open Catch New HK German manufacture. Compatible With: SL8-1 SL8-6
    HKP-16378
    $59.95
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    $59.95
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  • New - GSG9 HK G36/SL8 (5.56/.223) Barrel Retaining Nut - HKP-18252 HK G36, SL8  Barrel Retaining Nut
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    HK G36, SL8 Barrel Retaining Nut

    GSG9

    $53.00
    HK G36 & SL8 Barrel Retaining Nut - USA Made in the USA. Compatible With: SL8 (all models & variants) G36E G36K G36C All other G36 Variants
    HKP-18252
    $53.00
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    $53.00
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  • New - MM HK 21E/23E/MSG90 (7.62x51/.308) & (5.56/.223) Railed Scope Mount - HKP-01923 HK21E, HK23E, MSG90 Optic Mount - Picatinny Rail
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    HK21E, HK23E, MSG90 Optic Mount - Picatinny Rail

    Michaels Machines

    $687.95
    HK21E/23E Or MSG90 Quick Release Full Picatinny Rail Scope Mount Rock-solid scope made in the USA to factory HK specs. Available exclusively at HK Parts. Please Note: These units are shipped in bulk and will have handling marks on the rails. Units are...
    HKP-01923
    $687.95
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    $687.95
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  • Out Of Stock
    Used - H&K 91/G3 (7.62x51/.308) Slimline Forearm - Black - Used Excellent Condition - HKP-18317 HK91, G3 Handguard - Slimline Style - Used Excellent Condition

    HK91, G3 Handguard - Slimline Style - Used Excellent Condition

    H&K Heckler & Koch

    $0.00
    Used Authentic German Military Surplus G3 Black Slim Line Forearm With Heat Shield Used in excellent shape. For the money, these are a nice addition to the collection. Each item will fit all full forearm length HK 91, G3, PTR style firearms. Used...
    HKP-18317
    $0.00
    Out Of Stock
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  • New - HKP HK 91/G3 (7.62x51/.308) Key Mod Handguard - HKP-17178 HK91, G3 Key Mod Handguard
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    HK91, G3 Key Mod Handguard

    HKP HK Parts

    $149.95
    HK G3, HK91 & PTR Low Profile Key Mod Forearm The KeyMod tactical hand guard easily installs on your firearm with minimal effort and locks up solid. No fitting required. Designed from the ground up by roller lock & HK enthusiasts with your...
    HKP-17178
    $149.95
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    $149.95
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  • New - HKP MP5 40/10 Trigger Group 3 Position Navy Housing (0,1) - Safe/Semi Only - Clipped & Pinned - HKP-17247 HK MP5 Trigger Group - 3 Position Navy 0,1 Safe Semi Only - Clipped and Pinned - .40 S&W, 10mm
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    HK MP5 Trigger Group - 3 Position Navy 0,1 Safe Semi Only - Clipped and Pinned - .40 S&W, 10mm

    HKP HK Parts

    $729.95
     HKP MP5 40/10 Trigger Group 3 Position Navy Housing (0,1) - Safe/Semi Only - Clipped & Pinned Finally a lower cost alternative to the spendy & hard to find all German HK FBI or 0,1 ambidextrous trigger group in a 4 position Navy factory...
    HKP-17247
    $729.95
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    $729.95
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  • On Sale
    HK MP5, MP5K Optic Mount - Aimpoint ACRO P-1 HK MP5, MP5K Optic Mount - Aimpoint ACRO P-1
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    HK MP5, MP5K Optic Mount - Aimpoint ACRO P-1

    HKP HK Parts

    Now: $67.95
    Was: $98.95
    HKP HK Parts Aimpoint ACRO P1 Mount for your HK MP5 and HK MP5K  Low-profile mount with a direct Aimpoint ACRO mounting interface. The smallest mount in the market with a sleek and clean overall look. Full co-witness, this mount is the best in...
    HKP-99354
    Now: $67.95
    Was: $98.95
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    Now: $67.95
    Was: $98.95
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  • HK MP5K, AP5-P Rear Sight Drum HK MP5K, AP5-P Rear Sight Drum
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    HK MP5K, AP5-P Rear Sight Drum

    MKE

    $28.95
    MKE MP5K & AP5-P Rear Sight Drum Factory MKE manufactured rear sight drum for the Century AP5-P.   Compatible With: HK MP5K Century AP5-P, AP5-M HK SP89 HK SP5K In-spec clones and custom builds
    HKP-22480
    $28.95
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    $28.95
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  • HK91, G3 Magazine Release Set, Complete - USED HK91, G3 Magazine Release Set, Complete - USED
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    HK91, G3 Magazine Release Set, Complete - USED

    H&K Heckler & Koch

    $24.95
    Heckler and Koch Magazine Release Set (Left to Right) for HK91 and G3 This HK German manufactured, used magazine release set for HK .308 pattern rifles consists of 6 pieces. Complete left-to-right mag catch assembly with both push-button and paddle...
    HKP-22466
    $24.95
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    $24.95
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  • On Sale
    Franklin Armory BFSIII AK-C1 Standard Caliber - BLEMISHED FA Franklin Armory HKP-19833-B Franklin Armory BFSIII AK-C1 Standard Caliber - BLEMISHED FA Franklin Armory HKP-19833-B
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    AK Binary Trigger - Curved - BFSIII - BLEMISHED

    FA Franklin Armory

    Now: $385.99
    Was: $534.95
    Franklin Armory BFSIII AK-C1 Standard Caliber - 7.62x39 - BLEMISHED DAMAGED PACKAGING - PRODUCT UNAFFECTED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The...
    HKP-19833-B
    Now: $385.99
    Was: $534.95
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    Now: $385.99
    Was: $534.95
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  • Out Of Stock
    New - Heckler and Koch HK416 and HK417 Pistol Grip and Tool - Black - HKP-22208 HK416, MR556, HK417, MR762 Pistol Grip - Tool Included

    HK416, MR556, HK417, MR762 Pistol Grip - Tool Included

    H&K Heckler & Koch

    $159.95
    HK Heckler and Koch's Pistol Grip with tool - Black Factory German pistol grip in black.  Compatible With: HK416, MR556 HK417, MR762 M27 G28 AR-15, M4, & M16 Platforms  
    HKP-22208
    $159.95
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    $159.95
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