12.5″ MidLength 5.56 NATO Upper Receiver with 11.7″ Rugged Mlok & OTx 3 Prong

The Mid State Firearms 12.5″ 5.56 NATO complete upper combines compact handling with uncompromising reliability. Built with a 4150 CMV nitride barrel, forged 7075-T6 upper receiver, lightweight 11.7″ Rugged M-LOK handguard, and outside-threaded 3-prong flash hider, this upper is engineered for hard use. Every upper is professionally assembled, and when ordered with a bolt carrier group, it is test fired with that exact BCG to verify reliable function before shipment.