Originally Posted by
dogsbody
According to Hiller, GI prefix were Mark 2 (.22 calibre) up to GI 15028 and Mark 4 above GI 15028. Mark 4 and later models had recoil pads according to illustrations in Hiller. So unless the recoil pad is missing, removed, it would appear to be a model earlier than Mark 4.
The more observant of you may have noticed that the Mark 3 appears to be missing above, there is no reference to a Mark 3 in Hillers book. which makes me wonder if the GI prefix up to 15028 was Mark 3?
According to Hiller Mark 2 was produced from 1959 to 1971 using prefixes GD,GE,GF,GG,GI. A very long time.
Anybody any comments or certain knowledge on the above?