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 - HKP MP5 F & MP5 40,10 Recoil Rod Assembly - HKP-17833 HK MP5, MP5F Recoil Rod Assembly
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    HK MP5, MP5F Recoil Rod Assembly

    HKP HK Parts

    $49.95
    MP5 F, MP5 40/10 Recoil Spring Rod Assembly Complete - Extra Power This is the correct MP5F or MP5 40/10 Recoil Rod assembly with the proper parts and size. Most commonly used for MP5's that are using +P or +P+ ammunition or any high impulse 9mm. Or for...
    HKP-17833
    $49.95
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  • Out Of Stock
    New - HKP HK MP5 9mm Flash Hider - 3-Lug - HKP-17228 HK MP5, MP5K Flash Hider - 3-Lug - 9mm

    HK MP5, MP5K Flash Hider - 3-Lug - 9mm

    HKP HK Parts

    $99.95
    HKP HK MP5 9mm Flash Hider - 3-Lug Easily attaches to the end of any factory specification 9mm 3 lugged barrel. This flash hider does not require the of threads as it attached to the 3 lug tip. Also a great addition for any of 3 lug barrels found on in...
    HKP-17228
    $99.95
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    $99.95
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  • Out Of Stock
    New - RCM HK21 & HK11 Trunnion - HKP-21609 HK21, HK11 Trunnion

    HK21, HK11 Trunnion

    RCM

    $274.95
    RCM HK21 Trunnion When RCM set out to make a replacement trunnion for the venerable HK21, they started the process by putting a factory unit through rigorous destructive metal testing.  The end-product: a US-made trunnion blending the proper...
    HKP-21609
    $274.95
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  • New - B&T APC9, BT APC45 Telescoping Brace/Stock Adapter - Black - HKP-18989 B&T APC9, APC45 Stock or Brace Adapter - Telescopic
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    B&T APC9, APC45 Stock or Brace Adapter - Telescopic

    B&T Brugger & Thomet

    $650.00
    B&T APC9 & APC45 Telescopic Brace/Stock Adapter The B&T telescopic brace adapter is an essential accessory to attach your favorite brace to your B&T firearm. Features: Complete adapter solution- no extra parts to buy except the brace...
    HKP-18989
    $650.00
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    $650.00
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  • Used - HK German -2 Locking Roller Standard 7.98mm - Used - HKP-20600 HK MP5, HK90 Series Locking Roller -2 - Standard 7.98mm - Used
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    HK MP5, HK90 Series Locking Roller -2 - Standard 7.98mm - Used

    H&K Heckler & Koch

    $9.95
    HK German Locking Roller Standard 7.98mm - Used The proper roller size is essential for proper head spacing and bolt gap. Used German German-made -2 or 7.98mm roller, each roller is priced per roller. Used HK German. HK locking roller, -2, 7.98mm. HK...
    HKP-20600
    $9.95
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    $9.95
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  • Used - H&K HK33/HK93 A2 Black Buttstock - Surplus - HKP-20133 HK33, HK93 A2 Buttstock - Surplus
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    HK33, HK93 A2 Buttstock - Surplus

    H&K Heckler & Koch

    $99.95
    H&K HK33/HK93 A2 Black Buttstock - Surplus HK33 complete surplus buttstock assembly in good condition. In perfect working order but will have signs of use. This is the original buttstock for the HK33A2. Compatible With: HK33 HK93 HK53 V33, 53, C93
    HKP-20133
    $99.95
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  • HK45 Thread Protector - .578x28 RH HK45 Thread Protector - .578x28 RH
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    HK45 Thread Protector - .578x28 RH

    HKP HK Parts

    $19.95
    HKP HK45 .45 ACP Thread Protector - Threaded .578x28 RH U.S.-made titanium thread protector designed for .45 ACP barrels threaded .578x28 right-hand. Features a fully hooded profile that extends over the muzzle to protect exposed threads and the barrel...
    HKP-19514
    $19.95
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    $19.95
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  • Out Of Stock
    New - H&K UMP/G36 (.40 S&W/.45 ACP/9mm/5.56/.223) Sear Spring - HKP-01866

    HK G36, UMP Sear Spring

    H&K Heckler & Koch

    $8.95
    HK UMP, USC, G36, & SL8 Sear Spring This part is used in conjunction with the sear in the trigger body of the lower.  
    HKP-01866
    $8.95
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  • New - HKP (5.56/.223) & (7.62x51/.308) Muzzle Brake - Threaded 15x1 RH - CA/NY Compliant - HKP-12746 HK416, HK417, G3, HK33, G36 Flash Hider - Threaded 15x1 RH - CA/NY Compliant
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    HK416, HK417, G3, HK33, G36 Flash Hider - Threaded 15x1 RH - CA/NY Compliant

    HKP HK Parts

    $24.95
    HKP (5.56/.223) & (7.62x51/.308) Muzzle Brake - Threaded 15x1 RH - CA/NY Compliant This muzzle device is a partially milled version (not completely milled) of the factory HK birdcage style flash hider found on the factory-correct HK models of rifles...
    HKP-12746
    $24.95
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    $24.95
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  • New - HKP HK 93/53/33 (5.56/.223) Receiver Flat With Weldment Set - HKP-00006
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    HK33, HK53, HK93 Receiver Flat - Complete Weldment Set

    HKP HK Parts

    $229.95
    HK .223, 556, & 300 BLK Receiver Flat With Complete Weldment Set Combo   Each flat and weldment set comes with 223/556/300BLK complete as a builders combo ready to assemble.   Compatible With: HK93, HK33, & HK53 Style Builds 300...
    HKP-00006
    $229.95
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  • New - H&K MP5K 9mm SEF Navy Style Trigger Housing - Push Pin - HKP-02463 HK MP5K 9mm SEF Navy Style Trigger Housing - Push Pin
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    HK MP5K 9mm SEF Navy Style Trigger Housing - Push Pin

    H&K Heckler & Koch

    $159.95
    H&K MP5K 9mm SEF Navy Style Trigger Housing - Push Pin HK German factory SEF grip frame that has been cut to MP5K factory German specs. This style of housing is for push-pin firearms that do not require clipped and pinned housing...
    HKP-02463
    $159.95
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  • New - KCI 30 Round MP5 9mm Magazine - 10 Pack - HKP-22058 HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - 10 Pack
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    HK MP5, SP5, MP5K, SP5K Magazine - 30 Round - 9mm - 10 Pack

    KCI

    $349.95
    KCI 30 Round MP5 9mm Magazine - 10 Pack Features: Latest generation and factory fresh, individually sealed magazine 30-round capacity 9mm caliber marked (9mm x 19) Curved for more reliable feeding with steel chrome follower All steel...
    HKP-22058
    $349.95
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    $349.95
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