I acquired this rifle, about which some of you may be able to provide further information. It appears to be a Mauser Type M Sporting Carbine. The left side of the receiver is marked “Mauserwerke Oberndorf.” The left side of the receiver ring is marked “7x57” and the serial number. The butt plate is blued steel marked “Mauser” with a trap. The barrel is approximately 20 inches long with a folding leaf rear sight and bead front. There is no provision for scope mounting. The rifle has a butter knife-style bolt handle and double set triggers. The hinged floor plate has a pivoting arm that locks it in place. My 1936 Stoeger’s Catalog carries an illustration appearing to identify it as a Type M, as does Olsen’s “Mauser Bolt Rifles.” I am not able to determine the exact year of manufacture. Any additional information would be appreciated.