Part 7. Installation of the Spikes Tactical buffer tube, spring, STT2 buffer, castle nut and Magpul ASAP QD end plate. Also the Mission First Tactical Minimalist Stock is installed. The following link is to a web site which has a nice calculator for torque setting adjustments if your using an extension.
https://www.freeinfostuff.com/torqueextension/torqueextension.htm