These trainers are only available on the second hand collector's market because they were banned from importation, and are no longer in production in China. The TS-45 is an air rifle trainer chambered in .177 Caliber / 4.5 MM. It was manufactured to train Chinese soldiers on the SKS rifle, which explains their similarities. It is fully functional and in great, original condition. This rifle has not been "sporterized." This is how they were manufactured. I am in the Houston - Clear Lake. Please Text 713-478-Seven9Two9.