I bought one of Kip's (carrierComp) titanium tubes. It came with very clear and exact directions which were easy to follow. In a nut shell: strip the gun down. Cut a length (4-6 inches) of bicycle inner tubing (it's cheap and works awesomely as a gripping aid). Slide the inner tubing onto the old mag tube. Apply heat with a heat gun to the front of the receiver where the mag tube is inserted into. Apply even heat to all sides ... keep the heat gun moving. After a while, the factory locktite will turn back to liquid and the mag tube can be unscrewed. You don't want to overheat it, but you also don't want to under heat it before you start unscrewing it. Just keeping trying to unscrew it occasionally. It shouldn't take much force. I was able to unscrew the mag tube on my own without any additional help from another person, but the bike inner tubing really helped getting a grip on the old tube. Once you've removed the tube, clean up the receiver threads, apply new locktite to the new tube, screw back in. Easy.