Product Details
Sons of Liberty Gun Works M4-L89 Upper Receiver Group, Upper Receiver, 5.56 NATO, 14.5" Barrel with Pinned and Welded Plan B Flash Hider (16" OAL), Fits AR-15, Matte Finish, Black, Includes 13.75" L89 Rail, Does Not Include BCG or Charging Handle U-M4L89-556-145-PB