Odd stock selection for that receiver.
A buddy of mine with a department in the southeast just got a bunch of rifles from Uncle Sugars very special back lot. Included in the batch was a rifle marked "Armalite AR15 Patent Pending". It has green furniture, a 1:12 barrel that is otherwise no different in taper than an M16/16a1's, and the most important feature: Serial #005700.
Some masochist in his chain of command wants him to convert it to semi-auto only and ISSUE it to a patrol officer....
Keep in mind, this is one of the FIRST 100 RIFLES MANUFACTURED FOR THE USAF CONTRACT. It is in factory condition. Needless to say more level headed people have taken charge of the situation, and the rifle will be placed on static display. Uncle Sugar has opted to give them a less historically significant a1 for them to issue to a patrol officer.