If you want to turn your AR pistol into a rifle, all you need to do is add a 16 barreled upper and a stock. Just make sure that if you return it to pistol configuration that you detach the stock first and an forward vertical grips you may have attached to the weapon...f the firearm was already classed as a pistol with a barrel shorter than 16 inches, it cannot be converted to a short barrel rifle and legally registered. An AR15 pistol can be rebuilt as a legal length 16 barrel rifle at a later date, but not as a legal short barrel rifle of less than 16 inches.
Step 4. Add one or two handfuls of garden soil or finished compost to the tumbler (see References 3). Garden soil or finished compost adds beneficial bacteria that helps start the decomposition process.
Backyard Composting. The best way to compost food waste is to mix it with dry leaves, sticks and twigs, wood chips, sawdust, dried/dead plants, shredded newspaper, or paper from a home shredder, and mixed yard waste. Always cover fresh food material with a layer of wood chips and a dusting of dirt, or with unscreened, mature compost.