Perazzi factory stock set that came off an MX10 with the European 4 notch adjustable rib that is more like the RS 4 notch not the American MX10 with the 4 notch. Dropout trigger Stock specs: Factory 4 way adjustable comb Right hand palm swell 1/4 in cast off at toe Comes with 2 recoil pads, one gives length of pull 14.375 and the other give LOP of 14.25 $1199 www.lombardosportingarms.com