My 40-X is a perfect example of the early Remington BDL Varmints from the 80's, with the 24" heavy barrel and high gloss bluing. I traded a pistol & some cash for it at the local gun shop. It had a Unertl scope on top, but I wasn't interested in it, so I made the deal w/o it.
I removed the original stock & put it in the gun cabinet, and replaced it with a McMillan. Currently have a Nightforce 40 MOA base on top, with Seekins rings holding a Sightron SIII in 6x24x50. A fantastic shooter even with bulk Federal HP's.
I know all about Remington 40-X Rimfire Sporters, as I'm one of the few to ever own one. I bought it from the original owner shortly after picking up this one. Sold it several years ago, as the prices were climbing so high I was scared to take it out of the safe.