Anyone seen this on back of Receiver?

[USGI]

I was a little late but am going to go ahead and post.

Well, I'm a little late too - nice day here yesterday for a change and I worked outside most of the day. Did take that Inland out of the safe last night and have a couple pictures. Don't think I ever had the action out of the stock before though, believe I would have counted the coils for the hammer spring first thing. Question for those knowing more about these SG receivers than me, how come mine has a narrow tang? My receiver does have a small hardness test mark on the RH side directly behind the operating slide channel. JD, the punch mark ahead of the rear sight is placed after test firing of the carbine. - Bob

[W5USMC]

Question for those knowing more about these SG receivers than me, how come mine has a narrow tang?

Bob, there were 5 different receiver configurations produced by Saginaw for inland, three of which were narrow tang, I believe it was their later two configurations that were wide tang. Their marking also changed throughout production SI, large SG, small SG.

CCNL-346