I’ve been looking at the Fenton titanium cylinders. My idea is to fit one of these, the “rifle” length version, to my hw100k. This will take it past the muzzle and I have a slim but very efficient moderator that will sit above it, making the cylinder and barrel/moderator around the same length. This will increase my shot count without increasing the overall length of the gun and moderator. What I would like to know is, has anyone on here had any experience of these cylinders, and also, anyone fitted a longer cylinder to the carbine model and if so, was the conversion successful or is my idea f