Hello B99. There is no such thing as a Model 91 Argentine Mauser. There is a Model 95 and a Model 98. What caliber is it...why do you say the stock is trashed? Is it a small or large ring Mauser? Is it drilled and tapped for scope mounts? Has the bolt handle been forged to clear a scope. Does it have the original safety or has it been modified? Would like to help you...pictures would be very helpful. Regards, Rick. OBTW, some of these old Mod95 Chileno and Argentine Mausers were made by Loewe and Orbendorf and are very very nice. Please post all the markings on the rifle and receiver. Regards, Rick.