7 cobblestone
1 bow
1 redstone dust
Open a crafting table
Place the bow in the center slot
Place cobblestone in all remaining slots except the bottom-center slot
Place redstone dust in the bottom-center slot
Take the dispenser from the result slot
7 cobblestone
1 bow
1 redstone dust
Open a crafting table
Place the bow in the center slot
Place cobblestone in all remaining slots except the bottom-center slot
Place redstone dust in the bottom-center slot
Take the dispenser from the result slot