Description Nuprol Bipod Grip Railed – Tan Increase primary weapon stability at standing, kneeling & prone with the addition of a NUPROL BIPOD GRIP RAILED. Fitting to a standard 20mm RIS mount, this foregrip includes a spring loaded Bipod for when going prone and a side mounted RIS rail for further accessories. 16.3 / 22.2 cm Tall, 4.9 cm Across