PSA 16" Nitride 1:7 M4 Carbine 5.56 NATO MOE AR-15 Upper Assembly, Black - with BCG/CH & Rear MBUS

Palmetto State Armory

Overview

The PSA 16" Nitride 1:7 M4 Carbine Upper Assembly is a complete upper designed for the AR-15 platform, featuring a 16-inch barrel optimized for 5.56 NATO caliber ammunition. With a carbine-length gas system and a 1:7 twist rate, this upper provides reliable cycling and improved stabilization for a variety of bullet weights, making it versatile for different shooting applications. This assembly commonly appears in builds focused on standard 5.56 NATO configurations with a carbine gas system, appealing to builders looking for a dependable and straightforward upper assembly.