Captain America's Shield is the main weapon of choice of Captain America.
The shield is made of a one-of-a-kind vibranium-adamantium alloy. Through its vibranium properties, it is able to disperse any incoming energy. Though the adamantium properties, it is virtually indestructible, immune to virtually any form of blunt-force trauma. It is also noted to be remarkably light, allowing its wielder to easily strike an enemy in combat with it. Through proper aiming as seen by Captain America, the shield can be used as projectile to hit targets from a distance and ricochet back to its thrower.
It was mentioned by Fury that Captain America would have used his shield to knock out Trapster in mere five seconds.