It is a dexterity game, so there are no rulers, templates, or ranges.
It is pretty simple. You get a bunch of plastic toys cowboys and indians. Then, you divide them up however you want. There are some rules for creating a "balanced" battle, but that is a secondary concern.
You put them on the edges of the table, and you take turns moving an shooting. Moving is done by flicking a coin, and then moving the model to that point on the board.
Shooting is by flicking a coin at your opponent. If they fall down, they are dead.
There are various weapons that use different combinations of coin flicks, flips, and other tricks. Plus, there are a bunch of different scenarios too.
The game is entirely
WYSIWYG. Therefore, if you bump the table and 2 guys fall down and terrain block falls.... those guys are dead and the terrain stays as is. The scale is 1:1 too, so if a soda can is on the table, it blocks exactly as is.
Very simple, very fast, and very fun. You can find it here:
https://www.wargamevault.com/product/281214/High-Noon-Plastic-Men-Steel-Resolve