lee enfield trainer

[Peter Laidler]

The Mk3 or 111 is the .303" designation. The MklV is the designation when it goes from .303" to .22"

So, RIFLE, .303" No1 Mk3 or 3/1 converted to a .22" trainer becomes a
RIFLE, .22" No2 Mk4* (or lV*)

For your information, a star in the rifle designation is simply an early method is indicating a small but significant change in specification. Later the * was changed to a /. So a No4 Mk1* was a changed Mk1 rifle but when that was modified later, it became NOT a Mk1** or a Mk1*** but a No4 Mk1/3