I have a Brand New never installed Ballistic Advantage Performance Series Hanson Mid-Length 5.56 barrel for sale I was going to build a new upper but plans have changed so I just need to move this one. Comes with a pinned gas block preinstalled from Ballistic Advantage. I also have an Aero Precision M4E1 Upper Receiver listed as well, you can check that out too. See pics for specs on barrel. Asking $120 If add is up it is still available I live in New Port Richey and work in Clearwater