Yeah I thought about it and honestly it wouldn’t be very difficult. Build a small ledge out of a 2x6 and hollow out a slot for the buttstock and then make something to wrap around to hold it into the wall. When I started looking into it I just thought it would be easier to find with the growing AR market. As easy as it would be too build, time is more scarce than money right now so my best option right now is to try and buy something.
And to address an issue that was stated above. I have 2 rifles that will both be alternating between this mount. Both are fairly standard, the only difference being one has the Nikon M223 2-8x32 scope and the other has an Aimpoint PRO. The mount will only be utilized during night time hours. Both rifles go with me to work every day, and when I get home, both come into the house and go into my large gun safe until bed time when I bring one out and leave it in the room with us. My oldest is just now old enough to get out of his bed and wander at night (though he hasn’t yet, I don’t want his first time being the time he wanders into the bedroom and grabs my rifle). So that’s why I’m not concerned about it being locked. It’s only for quick access at night.