Thanks Skeettx, The one of pictures gets me a pretty fair idea on the forearm. It appears as if mine is about "one rib post" too long. At least compared to that later ser. no. Mine does not have the through bolts that this gun also shows. Doesn't mean it never did, just means it is different. Ser. no.? range difference? Also trying to follow the checkering pattern to get a match. So far it all looks good to me. My forearm has a good fit to the gun, it is just oversized,or so it appears. Much easier to trim it down than to find a forearm stretcher. Thanks again!