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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  • Used - H&K G3/91 Front Sight Tower - SURPLUS - HKP-22158 HK91, G3 Front Sight Tower - SURPLUS
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    HK91, G3 Front Sight Tower - SURPLUS

    H&K Heckler & Koch

    $16.95
    H&K G3/91 Front Sight Tower - SURPLUS UNIT QUALITY MAY VARY - SEE PHOTOS FOR EXAMPLE OF CONDITION RANGE Used genuine H&K steel front sight tower for the G3 & HK91. Provides the front sight post assembly for target acquisition and secures the...
    HKP-22158
    $16.95
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    $16.95
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  • HK416, MR556, MR762 Snap Hook Adapter for Slimline Buttstock - Ambi HK416, MR556, MR762 Snap Hook Adapter for Slimline Buttstock - Ambi
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    HK416, MR556, MR762 Snap Hook Adapter for Slimline Buttstock - Ambi

    H&K Heckler & Koch

    $177.95
    H&K MR556/MR762 Ambi Slimline Buttstock Snap Hook Adapter Genuine H&K snap hook adapter designed to provide ambidextrous sling attachment points for MR556 and MR762 slimline buttstocks.  Compatible With: HK416, MR556, MR223 slimline...
    HKP-22100
    $177.95
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    $177.95
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  • New - Nefarious Arms HK MR556 A3 & 416 A5 Barrel Nut - HKP-22082 HK416 A5, MR556 A3 Barrel Nut
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    HK416 A5, MR556 A3 Barrel Nut

    Nefarious Arms

    $39.95
    Nefarious Arms HK MR556 A3/416 A5 Barrel Nut Whether replacing a barrel nut or sourcing the best parts for your build, the Nefarious MR556/416 barrel nut is an excellent option.  Meticulously crafted in the US to the highest quality standards...
    HKP-22082
    $39.95
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    $39.95
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  • Out Of Stock
    On Sale
    New - HKP .45 ACP - Titanium Thread Protector - Threaded 16x1 LH - HKP-22036 Thread Protector - .45 ACP - 16x1 LH - Titanium

    Thread Protector - .45 ACP - 16x1 LH - Titanium

    HKP HK Parts

    Now: $11.95
    Was: $23.95
    HKP .45 ACP Titanium Thread Protector - Threaded 16x1 LH US-made thread protector for firearms chambered in .45 ACP, threaded 16x1 left hand. Compatible With: HK UMP, USC HK45, HK45T HK45C, HK45CT HK USP 45, USPT 45 HK USPC 45, USPCT 45 B&T...
    HKP-22036
    Now: $11.95
    Was: $23.95
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    Now: $11.95
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  • New - H&K HK21 FMP Complete Build Kit - Matching Numbers - 14.5" Barrel - HKP-21848 HK21 FMP Complete Build Kit - Non Matching Numbers - 14.5" Barrel
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    HK21 FMP Complete Build Kit - Non Matching Numbers - 14.5" Barrel

    HKP HK Parts

    $3,124.97
    HK21 Complete Build Kit- Non Matching Numbers - 14.5" Barrel HK Parts bring you yet another exhaustive parts kit.  Our HK21 kit includes everything you need to resurrect an iconic classic and hit the range for some belt-fed action. Paired with...
    HKP-21848
    $3,124.97
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    $3,124.97
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  • On Sale
    New - Strike Industries HK MP5 .22LR Dual Folding Stabilizer w/ Adapter - HKP-21770-M HK MP5 .22LR Dual Folding Stabilizer w/ Adapter
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    HK MP5 .22LR Dual Folding Stabilizer w/ Adapter

    HKP HK Parts / Strike Industries

    $249.95 - $269.95
    Strike Industries HK MP5 .22LR Dual Folding Stabilizer w/ Adapter The Strike Industries Dual Folding Stabilizer paired with the HKP MP5 .22LR picatinny adapter is one of the best options on the market for those looking for a light, compact folding stock...
    HKP-21770-M
    $249.95 - $269.95
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  • New - B&T 39mm QD Skeleton Mount for Aimpoint ACRO - HKP-21730-M Picatinny Optic Mount - 39mm - Skeleton Mount - Aimpoint ACRO
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    Picatinny Optic Mount - 39mm - Skeleton Mount - Aimpoint ACRO

    B&T Brugger & Thomet

    $150.00
    B&T 39mm QD Skeleton Mount for Aimpoint ACRO The B&T QD "Skeleton" mount for Aimpoint® Acro offers a 39mm elevated profile for improved sight alignment, ideal for night vision setups requiring clearance over forward-mounted IR devices. Its...
    HKP-21730-M
    $150.00
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    $150.00
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  • New - HKP HK 416 .22 LR A5 Flash Hider - HKP-21575 HKP HK 416 .22 LR A5 Flash Hider
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    HKP HK 416 .22 LR A5 Flash Hider

    HKP HK Parts

    $59.95
    HKP HK 416 .22 LR A5 Flash Hider Our HK Parts A5 flash hider is a directly mounted upgrade that will enhance the appearance of your 416 .22LR build, perfect for those aiming to achieve an authentic A5 style. It comes with an O-ring for secure attachment,...
    HKP-21575
    $59.95
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    $59.95
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  • Out Of Stock
    New - HK MR556 Eyelet Sling Adapter - HKP-21064-M HK416, HK417, MR556, MR762 Eyelet Sling Adapter

    HK416, HK417, MR556, MR762 Eyelet Sling Adapter

    HKP HK Parts

    $89.95
    HK MR556, MR762 Eyelet Sling Adapter for Carrying Sling  Eyelet sling adapter for HK MR556 and MR762 platforms. Designed to match RAL8000 and tanodized handguards, this adapter installs at the front of the rail to provide a secure sling attachment...
    HKP-21064-M
    $89.95
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  • On Sale
    New - TPM - Titanium 3 Port Muzzle Brake .30 Cal - Black - HKP-20777 Muzzle Brake - Titanium 3 Port .30 Cal
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    Muzzle Brake - Titanium 3 Port .30 Cal

    Tactical Precision MFG

    Now: $42.95
    Was: $84.99
    TPM - Titanium 3 Port Muzzle Brake .30 Cal This radially ported muzzle brake is for Ruger American and many other lightweight mountain rifles. Features: Weight:0.67 oz Material: Grade 5 titanium Color: Black Threading: 5/8x24
    HKP-20777
    Now: $42.95
    Was: $84.99
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    Now: $42.95
    Was: $84.99
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  • Out Of Stock
    On Sale
    New - GSG9 HK SP5 US Rear Stock w/ HK Parts Adapter - HKP-20662 HK SP5 Stock with HKP Adapter

    HK SP5 Stock with HKP Adapter

    HKP HK Parts / GSG9

    Now: $189.95
    Was: $259.95
    GSG9 US Folding Stock with HK Parts Adapter for HK SP5 GSG9 US folding stock paired with an HK Parts SP5 adapter. Configured as a direct-fit stock assembly for the SP5 platform. Specifications: CNC machined adapter Solid billet aircraft-grade...
    HKP-20662
    Now: $189.95
    Was: $259.95
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  • New - H&K A3 Parkerized Stock Protective Cover - HKP-20649 HK A3 Parkerized Stock Protective Cover
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    HK A3 Parkerized Stock Protective Cover

    H&K Heckler & Koch

    $19.95
    H&K A3 Parkerized Stock Protective Cover The perfect replacement part for all HK G3, HK33, and MP5 collapsible stocks issued with steel covers. Complete with locking spring clips welded in place. 
    HKP-20649
    $19.95
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    $19.95
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