I got a .22 mossberg 250ca shv-l-lr for $30.00. I have searched the internet over and can not find information on this model? It also has this amber colored looking lacquer type stuff on the barrel and receiver?The Model 100ATR is a bolt-action rifle from O.F. Mossberg & Sons. ATR stands for "all-terrain rifle". The ATR is available in .308 Winchester, .243 Winchester, 7mm-08 Remington, .30-06 Springfield, or .270 Winchester. It has a 4+1 round capacity.