Aero Precision M4E1-T Complete Upper 16" HBAR Mid FDE - APAR700715M97

This is a complete AR-15 upper receiver assembly featuring a 16" HBAR profile barrel in mid-length gas configuration. The upper includes an M4E1 threaded receiver, 15" Atlas S-One M-LOK handguard, low-profile gas block, mid-length gas tube, and A2 birdcage flash hider; assembly is pre-assembled but does not include bolt carrier group or charging handle.