Ok I was doing some research on changing out the stock plastic pad that comes with the PRS Stocks as well as using the search function here. I have seen that Zel Custom Manufacturing makes an adapter plate that screws into the existing rear plate that the plastic " recoil " pad attaches to. The other options are to buy a slip over or a grind to fit. Thankfully I came across a company called Modular Driven Technologies. They make a soft recoil pad that is a direct replacement for the stock pad. They make two models that will cover every Mag Pul stock currently made. I bought mine through Brownells. M.D.T. also makes a replaced for the adjustable butt plate as well. That requires you to disassemble the stock and replace the o.e.m. guts with their replacement. That replacement allows you the ability to adjust for L.O.P It also allows you to adjust the butt plate up and down as well as horizontally if you wish to have a slight cant to the rifle. The M.D.T. recoil pad will run you around $35.00 so I bought one to try out. I posted the links below so those using the Map Pul stocks, specifically the PRS on a .308 or heavier can have some options without rigging something up. For those that may say pull the female sponge out of a certain place, I have had 2 repairs done on one shoulder surgery and its never really been the same, so after a few rounds, the .308 even on my SASS starts to tickle.
http://www.tactilite.com/M-P-Magpul-Pachmayr-Adapter-and-Recoil-Pad-Combo-p/rp-0032.htm Zel Custom
http://mdttac.com/buttstocks/ Modular Driven Technologies
http://www.tactilite.com/M-P-Magpul-Pachmayr-Adapter-and-Recoil-Pad-Combo-p/rp-0032.htm Zel Custom
http://mdttac.com/buttstocks/ Modular Driven Technologies