The Vereinsgewehr 1857 (union rifle, mod. 1857) was the commonly developed rifle of Baden, Hesse and Württemberg for their troups of the 8th Bundesarmee corps as a successor of the Musket Model 1777 corrigé. The rifle for the line infantry was, with minor modifications in the sights, adopted by all three states; pistols and carbines for the cavalry and sharpshooter rifles for the Jäger were, however, developed by each state on its own. The rifle has a percussion lock construction of Swiss model, i.e. there was no loading position of the hammer.