I saw these on Amazon searching for a rifle scope. I shoot mostly off a Uncle Bud's Bull bag at the range and it is never the right height. Have to prop it up with 2x2 or 2x4's. According to specs my bag would be about 6 inches too long but it is when I put lumber under it. Does anyone have one of these. Looks pretty dandy. Only bad reviews was hard to crank up and down. I can live with that.