AR15 Armorers Wrench by Guntec USA
AR15 ARMORERS WRENCH Specially designed for all your need in taking apart your M4, AR-15, M16 Made by Guntec USA Patent # D548,552 Made of Heat treated steel Take off barrel, stocks (collapsible and fixed), muzzle brakes, flash hiders, and free floating handguardsDO NOT BE FOOLED, this is the only heat treated wrench. BEWARE of Chinese knockoffs, they are not heat treated and are powder coated Lifetime guarantee