Battle Arms Development Workhorse 16 Upper AR-15 5.56x45mm NATO M-LOK

The Battle Arms Development WORKHORSE 16" Complete Upper Receiver is a ready-to-build AR-15 upgrade featuring a 5.56x45mm NATO chambering, a 16" barrel, and a durable black anodized finish that delivers rugged reliability in the field or on the range. This upper is designed for AR-15 enthusiasts seeking a high-performance fit with a modern M-LOK handguard that allows versatile accessory mounting and streamlined handling. It arrives as a complete upper receiver assembly, pairing a precision-align