Aero Precision M5 22" 6.5 Creedmoor ATLAS S-ONE Barreled Upper: Aero Precision M4E1 Threaded 16" .300 Blackout ATLAS S-ONE Upper: Aero Precision AR15 20" 5.56 Upper w/ Pinned FSB & A2 Handguard: $704.99. $674.99. $524.99. $479.99. $424.99. Aero Precision M4E1 16" 5.56 Mid-Length ATLAS S-ONE Upper: Aero Precision M4E1 Threaded 16" 5.56 M4 ATLAS ...
AR-15 Upper Receiver Groups — Barrel Assemblies & Parts — Upper Receiver & Parts — Rear Sights & Carry Handle ... XM177. Price: $50.00. Part Number : SP62357.