I ordered one of these Modular Design Technology "LLS" aluminum chassis for my Ruger American 300 AAC. I have found that I enjoy that rifle for target shooting as much as anything so I decided to upscale it. It takes their AICS-style 10 round mags and all the AR goodies with regards to buttstock and grip. I still have the Adjustable stock from my Ruger RPR I will install on mine, along with the RPR's original pistol grip. I have an Atlas bipod for the front end.
Dealing with the manufacturer was one of the most pleasant shopping experiences I've had in a while. It ships Tueday morning and I'm told it will arrive by Friday. I will have it at the range an hour later! ~Muir