View all BSA Ammunition Ammunition for sale all over the UK, in areas such as Melbourne, Heckington, Derby BSA is the oldest air rifle producer in the world, with over 160 years of experience. The company was founded by Birmingham Small Arms Company (BSA) as a union of gunsmiths in 1860. BSA has grown from a small union to become an important industrial group and one of Britain’s most loved brands. You'll find popular models for sale here on Gunstar, such as the R10 or the Ultra...