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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  • Strike Mini HandStop with Cable Management System for M-LOK, Flat Dark Earth

    Strike Mini HandStop with Cable Management System for M-LOK, Flat Dark Earth

    Strike
    $12.99
    Strike Industries AR-CMS-MHS-FDE Mini Handstop Flat Dark Earth Polymer The Strike Mini HandStop with Cable Management System is a compact and lightweight firearm accessory designed to improve weapon control and wire organization. Crafted from durable SI...
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  • Grovtec US Inc G-Stop GTHM321 Reversible Hand Stop Aluminum Black

    Grovtec US Inc G-Stop GTHM321 Reversible Hand Stop Aluminum Black

    Grovtec US Inc
    $39.99
    GrovTec US Inc GTHM321 G-Stop Reversible Hand Stop Black Anodized Aluminum The Grovtec US Inc G-Stop GTHM321 is a versatile and durable hand stop designed for tactical and hunting rifles. Crafted from lightweight anodized aluminum, this hand stop...
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  • Franklin Armory Libertás Built Lower Receiver Model 0020009BLK Multi Caliber Firearm

    Franklin Armory Libertás Built Lower Receiver Model 0020009BLK Multi Caliber Firearm

    Franklin Armory
    $431.99
    Franklin Armory 0020009BLK Libertas Multi Aluminum Black Hardcoat Anodize The Franklin Armory Libertás Built Lower Receiver offers versatile compatibility with multi-caliber firearms, making it suitable for a variety of shooting applications. Featuring...
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  • Lead & Steel LLC LS556PEN-MID-14.5 AR-15 Barrel 14.5 Inch Mid-Length 1:7 Twist M4 Feed Ramps Black Nitride Finish

    Lead & Steel LLC LS556PEN-MID-14.5 AR-15 Barrel 14.5 Inch Mid-Length 1:7 Twist M4 Feed Ramps Black Nitride Finish

    LEAD & STEEL LLC
    $110.99
    Lead & Steel Llc LS556PEN-MID-14.5 5.56mm 14.50" Pencil Profile Features M4 Feed Ramps The Lead & Steel LLC LS556PEN-MID-14.5 AR-15 barrel is crafted from durable 4150 Chrome Moly Vanadium steel, ensuring reliable performance and longevity...
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  • Lead & Steel LLC AR-9 Barrel 16 Inch Chrome Moly Vanadium with Black Nitride Finish

    Lead & Steel LLC AR-9 Barrel 16 Inch Chrome Moly Vanadium with Black Nitride Finish

    LEAD & STEEL LLC
    $110.99
    Lead & Steel Llc LS9MM16-28 AR9 9mm 16" The Lead & Steel LLC AR-9 barrel is crafted from premium 4150 Chrome Moly Vanadium steel, ensuring durability and reliability for your firearm. Measuring 16 inches with a 1:10 twist rate, this barrel is...
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  • Luth-AR 308-BS-11 Buffer Body for AR-10 Rifle in 308/7.62mm

    Luth-AR 308-BS-11 Buffer Body for AR-10 Rifle in 308/7.62mm

    Luth-AR
    $33.99
    Luth-ar 308-BS-11 Buffer Body 308/7.62mm Rifle AR-10 The Luth-AR 308-BS-11 buffer body is designed specifically for AR-10 style rifles chambered in 308 Winchester and 7.62mm. Crafted for durability and precise fit, this buffer body ensures reliable...
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  • LUTH-AR LRPK-1 Lower Receiver Parts Kit AR15 Caliber 223 Rem/5.56 NATO

    LUTH-AR LRPK-1 Lower Receiver Parts Kit AR15 Caliber 223 Rem/5.56 NATO

    Luth-AR
    $55.99
    Luth-ar LRPK-1 Lower Receiver Parts Kit AR-15 .223 Rem/5.56 NATO Black The LUTH-AR LRPK-1 lower receiver parts kit provides all the essential components needed to fully assemble a stripped AR-15 lower receiver. This comprehensive kit includes a trigger,...
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  • LUTH-AR LR-BC308A 308 Paddle Bolt Catch Assembly

    LUTH-AR LR-BC308A 308 Paddle Bolt Catch Assembly

    Luth-AR
    $25.99
    Luth-ar LR-BC308A The Paddle Bolt Catch Assembly Black Steel The LUTH-AR LR-BC308A 308 Paddle Bolt Catch Assembly is designed for quick and reliable bolt manipulation in high-pressure situations. Featuring a large paddle surface, this steel bolt catch...
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  • LUTH-AR BL-04A Gas Tube Carbine Length Stainless Steel Replacement Part

    LUTH-AR BL-04A Gas Tube Carbine Length Stainless Steel Replacement Part

    Luth-AR
    $11.99
    Luth-ar BL-04A Gas Tube Carbine Length The LUTH-AR BL-04A gas tube is a durable, high-quality replacement designed for AR-style rifles. With a length of 9 3/4 inches, it channels gas bleed-off efficiently from the gas block to the gas key, ensuring...
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  • LUTH-AR UR-01-M16 Stripped M16 A1 Upper Receiver with Black Hardcoat Anodize and 223 Rem/5.56 NATO

    LUTH-AR UR-01-M16 Stripped M16 A1 Upper Receiver with Black Hardcoat Anodize and 223 Rem/5.56 NATO

    Luth-AR
    $164.99
    Luth-ar UR-01-M16 A1 Stripped Upper Receiver 223/5.56mm Aluminum Black Hardcoat Anodize Receiver for M16 The LUTH-AR UR-01-M16 is a high-quality stripped upper receiver modeled after the classic M16 A1 design, renowned for its lightweight and reliable...
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  • LUTH-AR BT-01-30P BOLT Gas Rings for .223 Rifle - 30 Pack

    LUTH-AR BT-01-30P BOLT Gas Rings for .223 Rifle - 30 Pack

    Luth-AR
    $18.99
    Luth-ar BT-01-30P BOLT Gas Rings 223 Rem/5.56mm AR-15 Silver Optimize your .223 caliber rifle's performance with the LUTH-AR BT-01-30P bolt gas rings. Crafted from high-quality, durable materials, these gas rings are designed to effectively seal the gas...
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  • WOOX LLC M-LOK Vertical Grip Walnut SH.VGR001.01

    WOOX LLC M-LOK Vertical Grip Walnut SH.VGR001.01

    WOOX LLC
    $79.99
    Woox Vertical Grip Walnut Wood The WOOX LLC Walnut M-LOK Vertical Grip SH.VGR001.01 offers shooters a premium, versatile grip crafted from high-quality American walnut wood. Its reversible dual-wall design allows for adaptable shooting styles, providing...
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  • Tapco AR-15 Single-Stage Trigger Curved

    Tapco AR-15 Single-Stage Trigger Curved

    Tapco
    $159.99
    Tapco Rifle Trigger Black Curved Trigger Single-Stage Fits AR-15 The Tapco TAP22034 AR-15 single-stage trigger offers a smooth and consistent pull with a weight of 3.5 pounds, enhancing your firearm's accuracy and performance. Designed for easy drop-in...
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  • Tapco Enhanced Performance AR Upper Parts Kit

    Tapco Enhanced Performance AR Upper Parts Kit

    Tapco
    $32.99
    Tapco Enhanced Performance AR Upper Parts Kit The Tapco Upper Parts Kit provides essential components for firearm assembly and maintenance. Designed for compatibility with AR-style rifles, this kit includes high-quality parts such as a bolt carrier...
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  • Tapco TAP22053 H1 Carbine Buffer for AR-15 with Aluminum Construction

    Tapco TAP22053 H1 Carbine Buffer for AR-15 with Aluminum Construction

    Tapco
    $31.99
    Tapco TAP22053 H1 Carbine Buffer Black Aluminum The Tapco TAP22053 H1 Carbine Buffer is designed to improve the performance and reliability of your AR-15 rifle. Weighing 3.8 ounces, this high-quality buffer is made from durable 7075 T6 aluminum and...
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  • Tapco AR Aluminum Hand Stop / Black

    Tapco AR Aluminum Hand Stop / Black

    Tapco
    $42.99
    TAPCO HAND STOP SM The Tapco TAP22095 Hand Stop is a durable and lightweight accessory designed for tactical rifles. Crafted from high-quality aluminum, this black hand stop provides a secure grip and enhanced control during shooting. Its compact design...
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  • Tapco M-LOK Hand Stop Aluminum Black

    Tapco M-LOK Hand Stop Aluminum Black

    Tapco
    $49.99
    Tapco Hand Stop Black Aluminum The Tapco TAP22096 M-LOK hand stop is a compact, low-profile grip accessory designed to enhance weapon control and handling. Constructed from durable aluminum and finished in black, this hand stop provides a secure fit on...
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  • Tapco Ejection Port Door Kit for AR-15 .223/5.56 Aluminum Model / TAP22097

    Tapco Ejection Port Door Kit for AR-15 .223/5.56 Aluminum Model / TAP22097

    Tapco
    $29.99
    Tapco TAP22097 Ejection Port Door Cover Kit AR-15 Black Aluminum The Tapco Ejection Port Door Kit is an essential upgrade for AR-15 rifles, designed specifically for .223 and 5.56 caliber models. Crafted from durable aluminum, this ejection port cover...
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  • Rise Armament Oh S#it Kit Spare Parts Display with 18 Kits

    Rise Armament Oh S#it Kit Spare Parts Display with 18 Kits

    Rise Armament
    $287.99
    Rise Armament Oh S#it Kit Spare Parts Display with 18 Kits The Rise Armament RAOSKDISPLAY Oh S#it Kit Spare Parts Display is a convenient inventory solution for retailers, armorers, and firearm builders who want quick access to commonly needed...
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  • DPMS Panther Arms DP51655109854 AR-15 MOE Lower Build Kit with Magpul Stock and Pistol Grip

    DPMS Panther Arms DP51655109854 AR-15 MOE Lower Build Kit with Magpul Stock and Pistol Grip

    DPMS PANTHER ARMS
    $119.99
    Dpms Panther Arms DP51655109854 MOE PPT Lower Build Kit AR-15 Includes Black Magpul Grip & Magpul MOE Black Stock The DPMS Panther Arms DP51655109854 AR-15 MOE Lower Build Kit provides essential components for assembling or upgrading your AR-15 lower...
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  • White Label Armory WLA-UPR-2004-01 AR-15 Dust Cover Kit Knurled

    White Label Armory WLA-UPR-2004-01 AR-15 Dust Cover Kit Knurled

    White Label Armory
    $9.99
    White Label Armory WLA-UPR-2004-01 Knurled Dust Cover Kit AR-15 Black The White Label Armory WLA-UPR-2004-01 Dust Cover Kit for AR-15 provides a durable and stylish solution for protecting your firearm's ejection port. Crafted with a knurled finish,...
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  • Kinetic Development Group KDG MRX5-MK2-015 FN SCAR 15P Rail 6-Inch M-LOK Black

    Kinetic Development Group KDG MRX5-MK2-015 FN SCAR 15P Rail 6-Inch M-LOK Black

    KINETIC DEVELOPMENT GROUP
    $231.99
    Kinetic Development Group MRX5-MK2-015 FN Scar Rail MREX15 6" Black The Kinetic Development Group MRX5-MK2-015 rail is designed to upgrade your FN SCAR 15P with a compact, lightweight handguard that enhances maneuverability without compromising...
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  • Kinetic Development Group SRX3 MK2 Stribog Rail Extension 6 Inch MLOK Aluminum Cerakote

    Kinetic Development Group SRX3 MK2 Stribog Rail Extension 6 Inch MLOK Aluminum Cerakote

    KINETIC DEVELOPMENT GROUP
    $208.99
    Kinetic Development Group STR5-MK2-010 SRX3 MK2 Stribog Rail Extension Black Aluminum Compatible w/ Stribog SP9 Models w/ MLOK Receivers The Kinetic Development Group SRX3 MK2 Stribog Rail Extension (SRX6) is a premium upgrade designed to enhance your...
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  • Liberty Precision Machine LPM-2020 Thread Protector Stainless Steel Nitride Black

    Liberty Precision Machine LPM-2020 Thread Protector Stainless Steel Nitride Black

    LIBERTY PRECISION MACHINE
    $34.99
    Liberty Precision Machine LPM-2020 Thread Protector Stainless Steel Nitride Black The Liberty Precision Machine LPM-2020 Thread Protector is a simple, durable solution for protecting exposed muzzle threads when a muzzle device or suppressor is not...
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  • Armaspec ARM268-AR10 Sound Mitigation Buffer Kit for AR-10 G3

    Armaspec ARM268-AR10 Sound Mitigation Buffer Kit for AR-10 G3

    ARMASPEC
    $86.99
    Armaspec ARM268-AR10 SMB-10 Buffer Kit Black/Silver AR-15 Gen3 The Armaspec ARM268-AR10 SMB Buffer Kit is designed to enhance the shooting experience by reducing felt recoil and minimizing noise during operation. This premium upgrade replaces the...
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