A1 Receiver Set - Standard (Airsoft, AEG)

My rendition of an A1 receiver, modeled to fit standard Marui V2 gearboxes. Hardware for the rear sight is from a JG F6661.

Tried to be as close to RS dimensions so left wall is 1.5mm thin, typical AEG selectors need 2mm, so I included a new selector switch to fit that. You can shave off .5mm from metal selectors and it would still fit, only difference with my selector is the screw is on the outside so no need to remove the access plug.