Going to buy a custom rig for PRS. I have been looking at either getting a complete MPA build with Matrix Chassis and Impact action or buying an Blue Mountain precision barreled action with an Impact action and a Hawk hill barrel then putting it in an MPA Matrix chassis. I'm new to the game so I was wondering if there was an advantage to either one? The MPA build would have their MPA/ Spencer barrel and the BMP would have the Hawk Hill barrel. Thanks in advance!