I would build one. If you buy one of those you'd have to have the work done by someone before you can take possession of the gun. I did all the work on mine myself because I chose to build one. If your looking for a BCM middy in 14.5", BCM offers to pin and weld a comp. on only their 14.5" uppers so that part is done. Then you just have to pin the stock and cut off the bayonnet lug, both of which can be done with basic tools. So you can basically build the same gun and save yourself a few bucks.