Utg ar15/ar308 armorer's multi function combo wrench FEATURES-Multi-function combo wrench -Delta ring barrel nut wrench -1/2" socket adaptor -jam nut wrench YHMA(R) compatible -UTGA(R) super slim barrel nut wrench -AR15 muzzle device wrench -A2 stock extension wrench -AR308 muzzle device wrench -Castle nut wrench -3-prong muzzle device -Flat head screw driver Other Features: Provides tools to install and remove parts often replaced & or reinstalled on both the ar15 and ar308 platforms