One of the best so far - B5 Systems P-Grip Pistol Grip

Yes, we all know the fact that companies have to make products like this is ridiculous, and hopefully we will put an end to it soon. But in the mean time, the b5 grip is probably the best featureless option right now. Its light and has the aggressive texture like their other grips. Which makes it fairly easy to continue to hold with one hand for mag changes, as long as you have the slightest amount of grip strength. The one thing that could make this better, is if they offset the fin for r/h or l/h shooters kinda like how the strike industries grip is offset for right handers. Instead the fin is centered on the grip. But that is a small complaint. If i needed another featureless grip, this would be my go to.