Here is what I put on e-goat. The article sets out the position for all three pension schemes.
"At the link below you will find an article I wrote on AVCs etc. If you are still on AFPS 75 you can still take out AVCs should you so wish. If you are still on AFPS 05 you can still buy Added Years. If you have transferred to AFPS 15, it is Added Pension (so a specific amount of extra money - not linked to rank or pay scales). It is the Added Pension factors that we haven't been able to get from MOD (but are on the case).
http://www.pathfinderinternational.c...125c-412220849