DealThis upper assembly features a 7.5'' heavy barrel with a 1:7 twist. It is chambered in 300 blackout and is housed in a 7" free floating quad rail. A complete rear charging reciever and BCG is included. BCA DOES NOT recommend using steel cased ammo in our Assemblies or Rifles. ALL NFA LAWS APPLY. from Bear Creek Arsenal (Product UA300PHB7.517(P)-(7)FFQ) |