I looked at the old Spike Tactical SAR rail install. I didnt know is there was a newer generation that used a barrel nut or if they still use nut that needs a 1 1/8 crows foot wrench. Also what is a good torque value? Ive done a bunch of research and everything stays 30-80ft lbs with 35 being what to shoot for. Tighten to 30ft lbs 3x to seat the threads then finally torque to 35 lbs to finish