Used CMMG Midlength upper 16" 1/7 twist chrome lined goverment profile barrel.
Includes charging handle, complete bolt carrier group, and detachable carry handle (A3 upper) and tapered handguards.
Front sight base was replaced by ADCO firearms.
Only shot about 500 rounds through this gun mostly XM193 and UMC .223 No steel cased ammo through this upper.
Cleaned after every use and only lubed with CLP
$510.00 shipped UPS ground
PM if intrested