The pattern was provided by Mr. Robert A. Braun, a noted uniform researcher and historian. Please note the belt loop on the left side. The gun you want to get is the .69 model 1842 Springfield Musket. Remeber, the '42 is what the 69th was issued. Each soldier was issued half a dog tent, that they shared with another soldier.
Some reenactors just sleep under the stars.
Or you could buy both halves. You could get a knapsack to pack your things in, but it is not important. There are over coats, the soldiers would wear these in the winter cold. These you can get anywhere. You will want a canteen.