Aero Precision M5 Barreled uppper 308win Atlas R-One 18" black - APAR538705M25

The Aero Precision M5 upper receiver is just what you need for your AR-10 build. This complete upper features an 18" barrel with a 1:10 twist rate. With a 15" Atlas R-One M-Lok rail you have tons of room for what ever accessories you need. Chambered in .308 Win all you need is to add your bolt and charging handle and it is ready to go on your DPMS style lower receiver.