Welcome to the forum!  You have chosen well, grasshopper.  Snatch the bowling ball from my hand.  Oops.  Wrong show.

The looks from this distance.  Does the rear sight have the letter C and the number twenty on it?  That would be a true carbine sight. and congruent with your gun.

Wait.  No.  you over paid by 950 bucks.  Tell you what I'm gonna do.  I'll give you a hundred bucks to salve your feelings for getting slickered.  Yeah.  That's the ticket.

Oh shoot.  You're not Steinmayer.  I think you did okay with the price.  The smarter guys will be along in a bit to give you a better assessment.  I think you did okey dokey if the rear sight is a C marked carbine sight.  Rifle sights only go to 18 and have no C marking.

Merry Christmas!