Oh I have no issue taking them apart, got the reassembly thing figured out with a tool I made, but my deal is the latest one I picked up the guide rod would not come out , just spun and I finally clamped it to a rill with an adaptor and while the drill spun it I pulled on it an it finally came free, so I think as the threads in the piece which is part of the barrel are hooped, so I may have to pout my new barrel on it.