This AR-STONER AR-15 Complete 350 Legend rifle length upper has a 16″ barrel features a 1:16 Twist Rate, with a carbine length gas system. It includes a 15″ MLOK rail, an M4 flat-top upper receiver, a Bolt Carrier Group, a Flash Hider, and a rear Charging Handle. This 350 Legend upper is compatible with any mil-spec AR-15 lower. This has a 15″ M-LOK ultralight handguard.
AR-STONER AR-15 Complete Upper Receiver 5.56x45mm NATO 18" Barrel Rifle Length Gas System 12" M-LOK Handguard Black
$398.99 
Midwest Industries AR-10 Lower Receiver Bench Block
$41.95
AR-STONER AR-15 Complete Upper Receiver 350 Legend 16″ Barrel
$365.99
