PSA 16" Carbine-Length M4 5.56 NATO 1/8 Phosphate 13.5" Lightweight M-LOK MOE EPT Rifle KIT w/MBUS Sight Set
All Palmetto State Armory upper receivers
Palmetto State Armory
Overview
The PSA 16" Carbine-Length M4 5.56 NATO Upper Receiver is a complete assembly designed for AR-15 platforms, featuring a 16-inch barrel with a carbine-length gas system for reliable cycling and performance. Its 1:8 twist rate provides versatility with a range of bullet weights, making it suitable for various shooting applications. This upper is commonly found in builds that prioritize the 5.56 NATO caliber and utilize a carbine gas system for optimal gas flow and reliability.
Specifications
PSA 16" Carbine-Length M4 5.56 NATO 1/8 Phosphate 13.5" Lightweight M-LOK MOE EPT Rifle KIT w/MBUS Sight Set
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