It is too bad, but we have builders of Semi Auto Brens (mainly in the US) and we have Members who were Armourers on full auto Brens (Englandicon, Canadaicon, Australiaicon and NZ). The two items existed in different spaces at different times. We don't have many semi auto armourers to help with the varieties of semi auto Bren builds. And not all of the original builders are building them currently. Most are around, but they seem to be little interested in taking back in a problem gun and working out the bugs. Sad situation. I guess that has transpired as the bugs were worked out on designs (sort of), but the kits started to dry up?