Outdoor Camping Multi-function Combination Wrench Tool

8-in-1 multi-function wrench
Color: black
Material: 4041 steel
characteristic:
8 in 1 AR wrench has 8 necessary tools
Column nut wrench: disassembly and installation barrel and free floating pipe/guard
Buffer and castle nut tools: quick removal and replacement of buffer tube
Net weight: about 480g