In stock right now at EB Airsoft is the AABB MP-Style Shotgun Kit for airsoft M870s. This can fit the APS and G&P 870 shotguns with some modifications needed to fit the Tokyo Marui M870 Gas Shotgun. This is based on the Magpul SGA Stock and MOE M-LOK Forend for the Remington 870. This is being offered at a reduced price of US$35.55 shipping included.