No gun blueprint on the pistol ladder is cheaper, so one player learns it early and crafts for the whole group. Blueprints stay with whoever researched them, and the frags and cloth are a morning's farming. What sets the count is the metal pipe. Nobody crafts one before a Level 3 bench, so three teammates wanting revolvers means three pipes from barrels and crates.
Think before a pipe goes in. A revolver in the recycler gives the pipe back only half the time, so a spare revolver lying in a box is half a pipe gone. Craft one per person who will carry it.
Tip
Smelt for ammo on the same trip. A stack of pistol bullets wants a pile of frags of its own, and an empty revolver wins nothing.