Another foregrip from Magpul available by early May at RSOV.com for US$19.99 according to Magpul, the RVG is... "Designed for use with milspec 1913 Picatinny rail hand guards, the RVG is a basic, light weight, cost-effective vertical fore grip. Shape is ergonomically designed for use as a traditional vertical grip. It has also been optimized for use with the "thumb break method" of shooting as taught by Magpul DynamicsSM.

Includes a custom fitted universal mounting rail and all mounting hardware."