The officially licensed CAA RONI conversion kit is ideal for converting your M9 / M9A1 airsoft handgun into a CQB sized rifle with improved handling.
This will give you access to a 5-position adjustable stock, top and side Picatinny rails for your sights, a folding tactical handguard grip, and a slot on the stock to hold an additional magazine.
With its rugged polymere and aluminum design, this kit will allow you to easily integrate your M9 replica inside without losing the blowback effect. Caution, this model is only intended for use with airsoft guns and will not support use on a real gun.