Check this Nitro.vo KeyMod Custom Foregrip that can be ordered from Laylax... "This is a Keymod Custom ForeGrip, a vertical type of foregrip that can be fit to various rail handguards which adopted the KeyMod standard. It is made of glass fiber reinforced ABS plastic and is short in size.

Expected to be released in mid April 2015, Laylax are now accepting pre-orders of their Laylax Custom Foregrip. This supports standard Picatinny Rail and can also be installed on the MP7A1. It has a unique angle shape for better grip of the front end of the airsoft gun, help in stabilisation, and reduce fatigue whilst holding the rifle.