The S200 is a low cost no-frills introduction to pcp shooting that is small in size but big on performance. This super compact rifle is primarily aimed at younger or more slightly built shooter. However it has proved a very capable weapon and will also suit adults that prefer something a little different. This model has a fixed cylinder re-filled via a quick release filling connector. If a single shot is not what you want from your rifle, but would still like the S200, there is now an optional 10 shot magazine system which can be retro fitted within minutes & provides a self indexing ten shot magazine Barrel: Rotary swaged - 15mm o.d. - 4.5mm (.177