Andro Corp Industries 5.56 NATO 8" M-LOK Upper Receiver

Andro Corp Industries builds this barreled upper around an 8 inch 5.56 NATO barrel and an M-LOK handguard. The NATO chamber runs both 5.56 NATO and 223 Remington. M-LOK slots take lights, hand stops and sling mounts directly, so nothing has to bolt on through a length of rail the shooter does not need. An 8 inch barrel lives in pistol and short barrel rifle builds, where overall length matters more than velocity, and it pairs naturally with a suppressor. The assembly mates to a standard AR-15 lower receiver.