These are the weapons from Half Life 2, vectored and converted to Adobe Custom Shapes.
Download - Adobe Custom Shapes file including
SMG and machine gun round and SMG grenade
Shotgun and 12-gauge slug
Pistol and 9mm round
Magnum and .357 magnum round
Grenade and grenade ammo shape
Laser Guided Rocket launcher and laser guided rocket
Crossbow and rebar round
Pulse Rifle and pulse clip
Half Life 2 and its weapons are trademarked by VALVe, makers of Portal and the Half Life series. The original art is copyrighted by VALVE, and these logos was vectored for entertainment purposes only. For that reason, this should not be used in print documents.
UPDATED VERSION - [link]