Cool, will look into that
There is the Rock River Arms Entry Stock Kit I fit is something that appeals to you. It is, however, shorter than an actual A1 stock, but it is fixed. It comes with its own carbine length buffer tube.
https://www.jsesurplus.com/rockriver...kit-black.aspx
That vltor stock looks pretty cool. It says it mounts to a carbine or rifle extension. I'm assuming that it won't work with an a5, anybody know for sure?