Yes it is.. They were struggling with accuracy on the L129-A1 as the scopes they used were designed for the GPMG or BMG 50 if I read correctly. i.e. the reticule wasn't actually specced for the barrel length and ballistic properties of the chamberered round. So whilst better than the L85 it was struggling a little at its designed range of 800.
They did a big shoot off between the L129-A1 and the L86 - modified with modern furniture and found the L86 just as accurate if not more so over range. (longer, heavier barrel and Better MV.

Actually it kept the L86-A2 tag I think as opposed to A3 (which we guessed). Now it's still basically a prototype, as it's a specialist weapon. And I've not heard more about it... But it's nice to keep in in the pack as it does offer different game play dynamics to the regular L86 and L129-A1 - I also think it looks pukka.
I guess in the pack it should be re-named L86-A2 RIS
It would be nice to get our "sharp-shooter" role in the most up-to date loadouts, using this instead of the L86 with plastic - as that's old hat now
References:
http://ukarmedforcescommentary.blogspot ... gular.html