News from On Target Airsoft as they took a delivery of these modular gun racks. You can interchange the mounts depending on the type of guns you have... "The S-Thunder Modular Gun Rack systems are now available at On Target Airsoft. They are an awesome and efficient way to store/display your M4, MP5, G36, & AK Airsoft or Real Steel Guns."

S-Thunder Aluminum Modular Gun Rack

S-Thunder Modular Gun Rack Holder - AK47

S-Thunder Modular Gun Rack Holder - G36

S-Thunder Modular Gun Rack Holder - M4

S-Thunder Modular Gun Rack Holder - MP5