Barrel Nut Tool For CZ Scorpion EVO 3 Ascalon Arms® comes in handy when you need to dismantle barrel nut for CZ Scorpion EVO 3. The extended design allows you to use a larger 1/2 "ratchet for disassembly. In addition, you can also use larger 23mm and 29 / 32mm wrench. The body is made of stainless steel. Make your work easier with this tool!