AR-15 / M4 / AR-10 / M-16 Parts

AR-15, M4, AR-10, and M16 parts include components for maintaining, repairing, upgrading, and customizing popular modern sporting rifle platforms. This category includes replacement parts, internal components, controls, small parts, hardware, and accessories designed for compatible rifle builds and configurations. Whether you are servicing a current rifle, completing a build, or upgrading performance and ergonomics, choosing the correct platform-specific parts helps ensure proper fit and dependable function.

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  • FAB Defense FX-MALC2B Locking Rail Cover Wide 9-Pack

    FAB Defense FX-MALC2B Locking Rail Cover Wide 9-Pack

    FAB DEFENSE
    $14.99
    FAB FX-MALC2B LOCKING RAIL COVER WIDE 9PACK Product DescriptionThe FAB Defense FX-MALC2B Locking Rail Cover Wide 9-Pack provides a secure and comfortable way to cover and protect your firearm's rail system. Designed to fit wide rails, these covers...
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  • FAB Defense FX-VANARB M-LOK Compatible AR Handguard with Heat Shield

    FAB Defense FX-VANARB M-LOK Compatible AR Handguard with Heat Shield

    FAB DEFENSE
    $46.99
    The FAB Defense FX-VANARB is a lightweight, M-LOK compatible AR-15 handguard designed for enhanced modularity and durability. It provides a secure platform for attaching accessories such as lights, grips, and lasers, making it ideal for tactical,...
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  • FAB Defense FX-FGGK-S Portable Integrated Foldable Foregrip

    FAB Defense FX-FGGK-S Portable Integrated Foldable Foregrip

    FAB DEFENSE
    $39.99
    The FAB Defense FX-FGGK-S is a compact, foldable foregrip designed to enhance stability and control during firearm operation. Its integrated folding mechanism allows for quick deployment or concealment, making it ideal for tactical and range use...
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  • FAB Defense FX-AR15KITB AR-15 Complete Kit / Black Finish / 30-Round Capacity

    FAB Defense FX-AR15KITB AR-15 Complete Kit / Black Finish / 30-Round Capacity

    FAB DEFENSE
    $255.99
    The FAB Defense FX-AR15KITB is a comprehensive AR-15 kit designed for enthusiasts and professionals seeking a reliable, ready-to-assemble firearm platform. This kit includes high-quality components crafted for durability and ease of use, making it...
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  • FAB Defense FX-AR15KITT AR-15 Kit / Glass Core M / Gradus Finish

    FAB Defense FX-AR15KITT AR-15 Kit / Glass Core M / Gradus Finish

    FAB DEFENSE
    $255.99
    The FAB Defense FX-AR15KITT is a comprehensive AR-15 kit designed for firearm enthusiasts and builders seeking a reliable upgrade or replacement set. This kit includes essential components built with quality materials, featuring a glass core M...
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  • Hogue AR-15 Grip with Flat Dark Green Finish

    Hogue AR-15 Grip with Flat Dark Green Finish

    Hogue
    $25.99
    HOG 15021 AR15 GRIP BVT FG OD GREEN The Hogue AR-15 grip offers a reliable and comfortable upgrade for your rifle, designed to enhance handling and control during shooting. Crafted with durability in mind, this grip provides a secure hold, making it...
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  • Q LLC Qsert Rail 4.5-inch Aluminum Handguard for AR-15

    Q LLC Qsert Rail 4.5-inch Aluminum Handguard for AR-15

    Q LLC
    $250.99
    The Qsert Rail is a lightweight, durable 4.5-inch aluminum handguard designed for AR-15 rifles. It provides a secure platform for mounting accessories such as lights, lasers, and vertical grips, enhancing your rifle's functionality and customization...
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  • Q Honey Badger M-LOK AR AR-15 Handguard 15 Inch Kit Grey

    Q Honey Badger M-LOK AR AR-15 Handguard 15 Inch Kit Grey

    Q LLC
    $350.99
    The Q Honey Badger M-LOK AR-15 Handguard 15 Inch Kit is built for shooters who want added handguard length, clean accessory mounting space, and a lightweight profile for modern rifle builds. This kit is designed around a 15-inch M-LOK handguard and is a...
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  • Maxim CQB Accuracy Carbine Buffer System / Close Quarters Combat

    Maxim CQB Accuracy Carbine Buffer System / Close Quarters Combat

    Maxim
    $42.99
    The Maxim Defense CQB G2 accessory is designed for customers upgrading or configuring a compact rifle or pistol platform with Maxim’s CQB-style system. This component is intended for builds where a shorter, more streamlined rear assembly is desired...
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  • Maxim Maxim Defense CQB Buffer / Spring H2 Set

    Maxim Maxim Defense CQB Buffer / Spring H2 Set

    Maxim
    $80.99
    The Maxim Defense CQB Buffer and Spring H2 set is designed for compatible Maxim CQB stock and brace systems. This buffer and spring combination is intended for compact AR-platform builds where proper cycling, recoil control, and system tuning are...
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  • Maxim Maxim Defense CQB Buffer / Spring H3 Set

    Maxim Maxim Defense CQB Buffer / Spring H3 Set

    Maxim
    $80.99
    The Maxim Defense CQB Buffer and Spring H3 set is designed for compatible Maxim CQB stock and brace systems. This buffer and spring combination is built for compact AR-platform setups where proper cycling, recoil control, and system tuning are important...
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  • BREEK Sledgehammer Charging Handle for AR-15 Light Edition

    BREEK Sledgehammer Charging Handle for AR-15 Light Edition

    BREEK
    $69.99
    The BREEK BRK6055 Sledgehammer Charging Handle is designed for use with AR-15 rifles, providing a reliable and easy-to-operate component for firearm maintenance and operation. Benefits This charging handle offers dependable performance and smooth...
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  • Magpul Industries Corp M-Lok Dovetail Adapter 4 Slot

    Magpul Industries Corp M-Lok Dovetail Adapter 4 Slot

    MAGPUL INDUSTRIES CORP
    $56.99
    MAGPUL MAG1052BLK M-LOK DOVETAIL ADAPTER 4 SLOT Magpul M-Lok Dovetail Adapter 4 Slot This Magpul Industries Corp adapter is designed for mounting accessories to M-Lok handguards and rails. It provides a secure and reliable connection point for various...
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  • Seekins Precision Picatinny Rail / 5 Slots for M-LOK

    Seekins Precision Picatinny Rail / 5 Slots for M-LOK

    Seekins Precision
    $34.99
    Seekins Precision Picatinny Rail with 5 Slots for M-LOK This Picatinny rail from Seekins Precision is designed for mounting accessories on M-LOK handguards or forends. It features five slots to provide versatile attachment points, enhancing customization...
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  • LANTAC USA M-Spec BCG for 308/762

    LANTAC USA M-Spec BCG for 308/762

    LANTAC USA
    $233.99
    LANTAC 01-MSPEC-762-NIB-BCG M-SPEC BCG 308/762 NIB The LANTAC USA M-Spec Bolt Carrier Group is a high-quality component designed for reliable performance in 308 and 7.62 rifles. Crafted to meet strict manufacturing standards, this bolt carrier group...
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  • One Horse LLC OH-UPK01 Upper Parts Kit with Dust Cover and Forward Assembly

    One Horse LLC OH-UPK01 Upper Parts Kit with Dust Cover and Forward Assembly

    One Horse LLC
    $20.99
    ONE OH-UPK01 UPPER PARTS KIT DST CVR/FRWRD ASST The One Horse LLC OH-UPK01 Upper Parts Kit is a comprehensive set designed to enhance or replace key components of your firearm's upper receiver assembly. This kit includes essential parts such as a dust...
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  • One Horse Standard AR-15 Charging Handle

    One Horse Standard AR-15 Charging Handle

    One Horse LLC
    $20.99
    ONE OH-UCH01 STANDARD AR15 CHARGING HANDLE The One Horse LLC OH-UCH01 Standard AR-15 Charging Handle is a reliable and durable component designed for AR-15 rifles. It provides a smooth and secure way to cycle the firearm, ensuring consistent operation...
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  • One Horse M16 Nitrided Bolt Carrier Group for 5.56 NATO and 300 Blackout

    One Horse M16 Nitrided Bolt Carrier Group for 5.56 NATO and 300 Blackout

    One Horse LLC
    $79.99
    ONE OH-UBCO1 M16 NITRIDE BCG 5.56 300BO The One Horse LLC OH-UBCO1 M16 Nitrided Bolt Carrier Group is a high-quality component designed for AR-15 platform rifles chambered in 5.56 NATO and 300 Blackout. Crafted with precision, this BCG features a...
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  • One Horse LLC OH-BR01 16-Inch Carbine Gas M4 Barrel in Black for 5.56 NATO

    One Horse LLC OH-BR01 16-Inch Carbine Gas M4 Barrel in Black for 5.56 NATO

    One Horse LLC
    $106.99
    ONE OH-BR01 16" CARB GAS M4 CONTR BRL 5.56 NATO The One Horse LLC OH-BR01 is a 16-inch carbine length barrel designed specifically for AR-15/M4 style rifles chambered in 5.56 NATO. This barrel features a precision-machined construction ensuring...
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  • One Horse LLC OH-BR03 16-inch Mid-Length Socom Barrel for 5.56 NATO

    One Horse LLC OH-BR03 16-inch Mid-Length Socom Barrel for 5.56 NATO

    One Horse LLC
    $106.99
    ONE OH-BR03 16" MID-LNGTH SOCOM BRL 5.56 NATO The One Horse LLC OH-BR03 is a precision-machined 16-inch mid-length barrel designed specifically for 5.56 NATO caliber firearms. Crafted with high-quality materials, this barrel provides reliable...
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  • One Horse LLC OH-BR04 16-inch Pistol Gas SOCOM Barrel for .300 Blackout

    One Horse LLC OH-BR04 16-inch Pistol Gas SOCOM Barrel for .300 Blackout

    One Horse LLC
    $106.99
    ONE OH-BR04 16" PISTOL GAS SOCOM BRL 300 BO The One Horse LLC OH-BR04 is a precision-engineered 16-inch pistol gas SOCOM barrel designed specifically for .300 Blackout caliber firearms. Crafted with durability and performance in mind, this barrel is...
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  • One Horse LLC OH-BR07 7.5 inch 5.56 NATO Barrel

    One Horse LLC OH-BR07 7.5 inch 5.56 NATO Barrel

    One Horse LLC
    $88.99
    ONE OH-BR07 7.5" 5.56 NATO BRL 1:7 The One Horse LLC OH-BR07 is a precision-machined 7.5-inch barrel designed for 5.56 NATO caliber rifles. Crafted with durability and accuracy in mind, this barrel features a 1:7 twist rate to ensure stable and...
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  • One Horse LLC OH-BR08 7.5-inch 300 Blackout Barrel with 1:7 Twist

    One Horse LLC OH-BR08 7.5-inch 300 Blackout Barrel with 1:7 Twist

    One Horse LLC
    $88.99
    ONE OH-BR08 7.5" 300 BLACKOUT BRL 1:7 The One Horse LLC OH-BR08 is a high-quality firearm barrel designed specifically for .300 Blackout cartridges. With a length of 7.5 inches, this barrel offers a compact yet effective option for versatile shooting...
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  • One Horse LLC 15-inch M-LOK Handguard

    One Horse LLC 15-inch M-LOK Handguard

    One Horse LLC
    $63.99
    ONE OH-HG01 15" M-LOK HANDGUARD The One Horse LLC OH-HG01 is a 15-inch M-LOK handguard designed for AR-15 style rifles. Crafted to provide a versatile and lightweight solution, this handguard offers enhanced control and customization options for...
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  • One Horse LLC OH-HG02 10-inch M-LOK Handguard

    One Horse LLC OH-HG02 10-inch M-LOK Handguard

    One Horse LLC
    $60.99
    ONE OH-HG02 10" M-LOK HANDGUARD The One Horse LLC OH-HG02 is a 10-inch M-LOK handguard designed for enhanced firearm handling and customization. Crafted from durable materials, this handguard provides a secure and stable platform for mounting...
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  • One Horse LLC OH-HG03 7-Inch M-LOK Handguard

    One Horse LLC OH-HG03 7-Inch M-LOK Handguard

    One Horse LLC
    $55.99
    ONE OH-HG03 7" M-LOK HANDGUARD The One Horse LLC OH-HG03 7-Inch M-LOK Handguard is a durable and lightweight accessory designed to enhance the functionality and customization of your rifle. Crafted from high-quality materials, this handguard provides...
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  • One Horse LLC OH-GT01 Pistol Gas Tube

    One Horse LLC OH-GT01 Pistol Gas Tube

    One Horse LLC
    $16.99
    ONE OH-GT01 PISTOL GAS TUBE The One Horse LLC OH-GT01 Pistol Gas Tube is a high-quality replacement part designed for optimal firearm performance. Crafted with precision, this gas tube ensures reliable cycling and consistent operation for your...
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