Complex sentence: The Wanzl rifle was a breechloading conversion of the M1854 & M1862 Lorenz rifle used as the service rifle of the Austro-Hungarian Empire until they had enough M1867 Werndl-Holub rifles to arm the military.
Split into simpler sentences: The Wanzl rifle was a breechloading conversion of the M1854 & M1862 Lorenz rifle. The Austro-Hungarian Empire used the Wanzl as their service rifle until they had enough M1867 Werndl-Holub rifles to arm the military.