It's amazing what a different grip angle and shape will do to your hold, target acquisition, and the group size. I immediately noticed the change in the GK1's grip angle and it's relationship to bringing up the muzzle level and not having to hunt for level as much when I modified my wood grip by taking off some material on the back.
i have not ever seen one of these pistols in the hand but it is interesting that Buck Rail has an adapter for the AR-15 grips i wonder what a Royal Arms grip would be like i have one on one of my Chasers https://royalarms.com/shop/ar-1516-grip/