That tip is very useful. Thanks. It hadn't occurred to me to use the stock for leverage.You can also slip the stock all the way back to the furthest setting. The heat won't transfer that far. Once it's hot enough to melt the thread locker use the stock to turn the buffer tube. Primal but effective and won't leave any unwanted marks or mars on the tube. I've done it half a dozen ways. It just depends on how ornery it wants to be.