This is a pre WWI era made m1893 cock on close mauser rifle made for the Ottoman Empire. They were used in WWI and later went through a re-chambering to 8mm mauser by Turkey starting in 1933. This one has a very nice bore and matching receiver to the barrel and sights. The bolt in this rifle has not been bent in America for sporterization, I believe the bolt is turned down because it is a carbine version bolt. This change does not impact function of the rifle. 

Message on here or text 7eight5 48one 1500      thanks for looking