PSA 16" Carbine-Length M4 5.56 NATO 1/7 Nitride 13.5" Lightweight M-LOK MFT Minimalist EPT Rifle KIT With MBUS Sight Set

Palmetto State Armory

Overview

The PSA 16" Carbine-Length M4 Upper Receiver is a complete assembly designed for the AR-15 platform, featuring a 16-inch barrel optimized for 5.56 NATO ammunition. With a carbine-length gas system and a 1:7 twist rate, this upper provides reliable cycling and accommodates a wide variety of bullet weights, making it versatile for different shooting applications. This upper receiver is commonly found in builds focused on the carbine gas system and chambered in 5.56 NATO, ensuring a solid choice for both tactical and recreational use.