I've got a G2 Contender and am going to do an eform1 through Silencer Shop on it. (It's already paid for. I just need to log in and fill out everything.)   I've had Contenders since the early 80s, but bought this one a while back because I wanted to build a suppressed 300 Blackout and didn't want to use one of my old frames.    What I hadn't noticed on it was the part in bold.

G2 CONTENDER
T/C ARMS
MFG BY S&W
SPFLD, MA

I was originally thinking Box 4a original mfr was T/C Arms, but reading that it appears it should be S&W w/ an address of SPFLD, MA.   Is the S&W answer correct?  

They've always been Thompson Center Contenders.  I didn't realize that S&W was making them.   Not sure when they started.  The receiver lists TC first, but then has MFG by S&W which has me wondering which to put.   I'm not sure if this is some variance thing where TC is the listed mfr, but S&W makes them for them, or if S&W is the MFR and puts TC on them because that's what people expect.