www.youtube.com/watch?v=JzeyQ31r7i8
www.youtube.com/watch?v=IrCb6CjXrHA
www.youtube.com/watch?v=7huC6zlyowc&feature=related
www.youtube.com/watch?v=aJER2U3NovE
www.youtube.com/watch?v=MKHOhQz2YwY&feature=related
http://www.falcon-airguns.co.uk/pdfs/falcon_pr…ull_barrell.pdf