(A side-note for those who continually post comments about hearing protection, I'm wearing the foam insert plugs, I'd be beyond deaf by now if I decided not to wear protection.) The "Gew 98M". Has the later tangent rear sight instead of the original roller coaster rear sight. Modifications were done in the early 1930's by the Germans. The receiver also has the 1920 Versailes Treaty "permission stamp" which limited the Weimar government to 100000 rifles. The Gewehr 98, named for 1898, the first year of its manufacture, superseded the earlier Model 1888 Commission Rifle (also known as Gewehr 88) in German service. The G98 itself was the latest in a line of Mauser rifles that were introduced in the 1890s. It was a bolt-action rifle, 1250 mm in length and 4.09 kilograms in weight. It had a 740 mm long rifled barrel and carried 5 rounds of 7.92 x 57 mm Mauser ammunition in an internal magazine. Everything is original.