Algodoo

I pull the trigger and the gun doesn't shoot.

Press F hehe

Okay, now it shoots. You should put instructions in the description or in the scene, because I doubt if anyone can read your mind! hehe

I always press F, Enter or the gattle, updated

What is a "gattle"? Is that a word in another language for the "trigger"?

Actually trigger means "gatillo" in spanish.

The little guys are just at the muzzle end, and their heads are tiny compared to the bullet's size. Why don't you make a real size guy, and put it at 500 m of the sniper?
Also the frequency is weirdly high. You should improve reliability if it only works at this frequency

Its ok, I can lower it a lot but, just to be sure, updated