Ober Gun Works
New member
What is the hole in the side of the receiver on the opposite side of the bolt on the top, front of receiver for? Have one in shop that had the ejector sticking, fixed that and it works fine but do not see the hole in pictures of other 39A's but do not find any parts on schematic that are missing. Hole is blued and looks like made in the factory. Hope question is not too jumbled to understand.