I use a piece of 1" PVC pipe. It's the grey PVC electrical conduit with a little thicker wall than the sch. 40 water pipe. It fits over the med. weight match barrel perfectly.A good many guides exhibit tight fits and care must be exercised when installing them. I don't install a guide that will not at least start onto the boss supporting it. If it won't start the barrel should be turned down on a lathe. The guide should be snug however.
A simple driver can be made using a length of 7/8" ID galvanized pipe with an end cap to pound on. You can buy a 18" length at the hardware store. Cut the threaded area off one end and remove the burrs. It's perfect for standard and medium length barrels.
Care must be taken to insure the pin hole lines up with the barrel groove. The guide can be aligned with a large Crescent wrench. If it has a very tight fit, a extension handle on the wrench may be required.