Quote Originally Posted by Alan De Enfield View Post
Yup - a BSA No7 Mk1 - the ONLY .22rf Enfield trainer designed to be fitted with a magazine that fed cartridges instead of just catching the empties

A limited production of 2000 for the RAF
Not quite, there is also the one with the Parker-Hiscock magazine, but hens teeth are common compared to it. (also required the bolt to be modified, (more than just the bolt head)