Guns are only weapon you need in modern RPG setting?

[Slipperychicken]

Show me a system that has stats for a half-brick in a sock, and I will buy it from you on the spot.

Although I am more partial to the one-time use pillow case filled with soda cans.

It's called a Sap, bro. If you're really picky, Improvised Sap (same stats as Sap, deals lethal damage, -4 non-proficiency penalty).