I recently picked up with Smith and Wesson M&P 15-22 and want to put a small scope on it. Nothing crazy, just something for say 25 or 50yd shooting at the range. I don't want to get a cheapo $50 scope that wont be very accurate, but I also don't want to spend as much as I did on the rifle itself for a scope. Thinking around $150 range for something decent and accurate. Any suggestions?