Aero Precision M5 Upper Aero/Ballistic Advantage 16" 308 Tactical Gov't Profile Barrel Nitride 1:10 twist 5/8x24 threads Aero Precision .750 Adjustable Gas Block and Melonite Midlength Gas Tube 2 Port Muzzle Device Aero Precision M5 Atlas R-One 15" Handguard Aero Precision M5 Charging Handle Aero Precision M5 308/6.5 Nitride Bolt Carrer Group with Dual Ejectors Aero Precision Lower Parts and Trigger Milspec Buffer Tube, 308 Carbine Spring, 3.8oz Short Buffer 1x20rd PMAG $1000