Pistol conversion kit

[onemanout]

I am interested in getting a pistol conversion kit for my G21. Does anyone have any experience using a conversion kit? If so, how well does it work? I am posting on this forum because the conversion will turn the pistol into a SBR.

RONI G2 10 - Command Arms Accessories
This links to the kit I am considering.

 

[JoshuaW]

I have looked at the RONI a few times, but I haven't heard from anyone that owns one. I know a couple of people have the Mako stock. Functionally I feel like a Sub2k probably is a little more practical.