Mitchell Defense DOC 18in 5.56 NATO Upper Receiver Carbon Fiber Wrapped Barrel Flat Dark Earth Finish M-LOK Free-Float Handguard

Mitchell Defense DOC 18in 5.56 NATO Upper Receiver Carbon Fiber Wrapped Barrel Flat Dark Earth Finish M-LOK Free-Float Handguard. 56 NATO Upper Receiver is optimized for lightweight precision and heat efficiency. Its barrel reduces overall weight while maintaining excellent thermal control and accuracy. The billet 7075-T6 thermal-fit receiver increases structural strength and promotes repeatable barrel harmonics. The ArmorLube Carbon Cutter BCG with Carpenter 158 HP/MPI bolt ensures dependable p