Thwips of wood being shaved off by a sharp knife or wood planer is the first thing one would notice. Walls adorned in various bows, arrows, targets, and quivers, you look into this house which it lit up by lanterns placed around the room. Along the edges of the wall are pieces of wood chippings brushed away from the floor, and a faint smell of oils and burnt string hits your nose.
A fletcher or bowyer will sell you most things related to crossbows, spears, and archery. Almost all of them belong to or run the guild in whichever town or village in which they are located.
Generally these items would be available, though depending on where in the world you are they might be unavailable or go by another name.