I didn't think much about Chassis style guns until I became an MDT dealer. Their flexibility is stunning. As one example:The ACC chasis 4.5 lbs, add your barrel and action, accessories to that for your finished weight. BUT: That Chassis if you need more weight...with their well thought out M-lok design you can within 15 minutes add an additional 12.5 lbs of weights. Put em' where you want em' ! Going to spend a day at the range filler up! Long walks take off 8 lbs! Best of both Worlds in minutes!