Heh I did this ages ago to my mini - I had an empire Axe but personally I much preferred my Mini so sold the Axe, but I loved the Axe grips, both the foregrip and rear grips!
So I swapped the foregrips and also the rubber grips, now I have a mini Axe
In the first pic you can see the rubber grips are set really low, thats because they dont fit quite right on the mini frame, I had to drill and tap extra holes for it to fit correctly, as you should be able to see in the second pic
I was waiting to get this back from being anodised before I posted here but seeing as the subjects already being spoken about...