Explore AR15 parts designed for builds, repairs, upgrades, and custom rifle setups across a wide range of compatible platforms. Whether you need upper parts, lower parts, barrels, handguards, triggers, controls, or other essential components, this category includes options built for proper fit, reliable function, and dependable performance.
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GUNFIGHTER Complete Lower Receiver Group – SPMD, Black | Mil-Spec AR15/M4 Platform
BCMLRG-STK-MOD-0-SPMD-BLK$525.00GUNFIGHTER COMPLETE LOWER RECEIVER GROUP – SPMD, BLACK | MIL-SPEC AR15/M4 PLATFORM The GUNFIGHTER Complete Lower Receiver Group – SPMD, Black is a high-quality, fully assembled lower receiver designed for AR15/M4 platforms. Crafted to... -
AERO Precision M5 AR-10 Complete Lower Receiver with MOE Grip – Black | .308 / 7.62 NATO
Aero PrecisionAPAR308255$464.99WATCHTOWER 15 BILLET COMPLETE LOWER RECEIVER – FDE | AR-15 MIL-SPEC READY PLATFORM The WATCHTOWER 15 Billet Complete Lower Receiver – FDE is a high-performance, precision-machined lower receiver designed for the AR-15 platform... -
Aero Precision M4E1 PRO Complete Lower Receiver 556/223 Kodiak Brown
Aero PrecisionAPAR600196$479.99The M4E1 PRO Lower Receiver seamlessly integrates ambidextrous controls into the M4E1 Lower that allows for the shooter to easily operate the bolt catch, magazine release, and safety without modifying their dominant firing hand. Aero Precision, M4E1... -
Aero Precision M4E1 PRO Complete Lower Receiver 556/223 ODG
Aero PrecisionAPAR600195$479.99M4E1 PRO Complete Lower Receiver w/ MOE Grip & SL Carbine Stock – OD Green Anodized SKU: APAR600195Finish: OD Green AnodizedPlatform / Series: M4E1 / M4E1Receiver Extension: CarbineShipping: FFL Dealer RequiredMade in America: Yes The M4E1 PRO... -
Aero Precision M4E1 PRO Complete Lower Receiver 556/223 Black
Aero PrecisionAPAR600194$479.99The M4E1 PRO Lower Receiver seamlessly integrates ambidextrous controls into the M4E1 Lower that allows for the shooter to easily operate the bolt catch, magazine release, and safety without modifying their dominant firing hand. Aero Precision, M4E1...
