VZ 58 FOREGRIP MAGPUL AFG 2

Opposed to AFG-1, the AFG-2 grip has thinner profile, so it doesn't mess with other accesories (such as a Surefire light), mounted on sides of the forearm.

Fits MIL-STD-1913 Picatinny and NATO STANAG 4694.
Fully compatible with Expert handguard. Looks very well on the rifle, doesn't block magazine extraction, so you can shift it closer to you.
Made of higly durable material. It's thin profile allows both types of gripping. The weight is negligible, no comparison to the heavy Fab foregrip.

Original product from Magpul.