Well, the mystery of this rifle continues to deepen for me. I pulled the carrier assembly today to replace the spring and put a new carrier head screw in it. The carrier is stamped "22". All of the pictures I've seen of the carriers have the specific cartridge stamped in them, so how does a 22 carrier work for any of the 30 caliber cartridges that might be used? I've decided regardless of what my coworker determines, I'm taking the gun to a gunsmith. I've gotta get this whole thing figured out professionally.
