Guys, I bought one of the ebay units for $22 delivered. It is very nicely made and comes with a large sheet of instructions and do's/don'ts to keep the average schlep from destroying his rifle. The "work" needed isn't much and in fact there are other ways to achieve the same end without all the drilling, etc. Either JB weld the piece to a chunk of 3/4" pipe or just weld it to the pipe and be done with it. As stated several places, the torque value is only 20 lbs. and that's not a lot. I'll be setting mine up for removal sometime this week. Can't wait to get in there and really get it clean! Mike in TX