Description Reviews This AR-15 complete upper is ready to be put on your complete lower: this upper comes completely build and ready to go. Complete Upper Features: AR-15 A2 Mil-Spec Upper Receiver 10″ Keymod Handguard 10.5″ 5.56 Barrel Carbine Length Gas System Muzzle Break Flash Hider .223/5.56 Bolt Carrier Group Mil-Spec Charging Handle 1 Review 5 Definitely a decent upper Posted by HENRY TAYLOR on 02-15-22 This was definitely a decent upper. Standard components, but put together well. Thanks for the speedy shipping. Now lets see about a lower parts kit.