The Brown Bear has a 16" Parkerized barrel, 1:9 twist rate and a standard hand guard. This rifle is chambered in 223 wylde and machined with M4 feed ramps (both in the lower and barrel extension). It has a commercial buffer tube, A2 front sight, and an A2 bird cage flash hider. Rifle is shipped with one 30 round tapco magazine, and a BCA-15 manual. Here at BCA we pride ourselves on our endless pursuit to provide affordable, reliable and accurate firearms. Our Brown Bear standard hand guard rifle is a perfect range gun and a hardworking hunting companion that will perform for a lifetime. To back that up all rifles and barrels come with our limited lifetime warranty. When you need a gun that won't break the bank and that you can depend on, think BCA Brown Bear. BCA DOES NOT recommend using steel cased ammo in our Assemblies or Rifles.