What'dya guys think about this? I like it, but will I need it? [This is from MilitaryTimes.com] The HammerHead Rifle Tool is designed for removal and installation of the castle nut, A1 and A2 receiver extensions (buffer tube), as well as most flash suppressor and compensators. The tool also has a cutout for a 3/8″ socket for proper torque if so desired. The end of the HammerHead Rifle Tool is pointed for pushing free tight or stuck receiver take down pins. Its a well built tool with usable features.