I have the Ruger 556FB, love the gun and most all accessories with the exception of the stock. Functional, it works, but seems like the only piece on the gun that seems like they cut corners with. Found a stock that I really like, the Magpul PRS but at about $190.00 seems a little steep in comparison to others. All the reviews are good, but having a hard time justifying. Any of you used it or have a different one that you really love? In other words, suggestions please.