The BCA Brown Bear Upper Assembly has a 16" Parkerized barrel, 1:9 twist rate and a standard hand guard. This complete upper receiver is chambered in 223 wylde and machined with M4 feed ramps (both in the lower and barrel extension) and comes with a BCA BCG and charging handle. This is the perfect upper for your next build. The BCA Brown Bear upper assembly, like all BCA products, is subjected to numerous QA/QC checks which for our firearms and upper receiver assemblies includes test firing prior to approval and shipment. This upper assembly is also backed by our BCA limited lifetime warranty. Choose an upper assembly designed by a U.S. company and made in the U.S.A. Choose BCA. BCA DOES NOT recommend using steel cased ammo in our Assemblies or Rifles.
|Material||4150 Chrome Moly Vanadium|
|Thread Pitch||1/2 x 28|
|Gas Block System||0.750|
|Gas Hole Diameter||No|