Rosco K9 12.5" 5.56 NATO Sauce Pack Upper Receiver Kit, Black Nitride - SP-K9-125-556-BCG-GTS-NGB-001

The Rosco K9 Sauce Pack is a complete AR-15 upper receiver kit featuring a 12.5" 5.56 NATO barrel with nitride finish, bolt carrier group, gas tube, and non-adjustable gas block. This patrol-length gas system kit is designed for drop-in assembly and includes all essential components for a functional upper receiver.