Do I need to take my buffer and spring out of my buffer tube in order for the bolt action to work?

Our true bolt action uppers will run with or without a buffer and spring. The rear of the bolt does extend into the buffer tube 5/8″ to 1″ depending upon caliber, so that amount of travel is needed. Lowers like the BRN-180 or Sig MCX would not be compatible as they don’t allow the bolt to fully travel to the rear during cycling. If you want to run a folding stock, we would suggest the Law Tactical folding stock adapter.