USO MST-100 Description: Originally developed in the 1970s by John Unertl for the USMC, the MST-100 was purpose-built for the M40A1 .308 rifle and later adapted for the .50BMG. Designed for uncompromising durability, its housing and turrets are precision-machined... MSRP: $365.00 - $3,650.00 Choose Options
