Mitchell Defense DOC 16in 5.56 NATO Upper Receiver Carbon Fiber Wrapped Barrel Flat Dark Earth Finish M-LOK Free-Float Handguard

Mitchell Defense DOC 16in 5.56 NATO Upper Receiver Carbon Fiber Wrapped Barrel Flat Dark Earth Finish M-LOK Free-Float Handguard. 56 NATO Upper Receiver provides superior heat control and reduced system weight through its barrel construction. The billet 7075-T6 receiver uses a thermal-fit barrel seat to enhance rigidity and promote consistent barrel harmonics. The ArmorLube Carbon Cutter BCG with Carpenter 158 HP/MPI bolt ensures dependable cycling with excellent carbon resistance. The M-LOK fre