BCM foregrip, after trying it ive come to the conclusion that the RVG is better in every way.
It locks in a way that plays better with other rail covers (with the bcm and certain rail covers like the xtms there has to be a gap between them).
The notches in the rvg make it a more comfortable hand stop.
The RVG is grippier.
The RVG is far superior to grab like a KAC.
When grabbing the rifle the profile of the rvg makes it easier to get a consistent grip due to the notches and shape of it.
All of this is just IMHO of course.
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