Just to update.....Ms. Martinez came through with some good info. I gave her my serial number and she confirmed that it is a Night Train IV. Here is the exact description she gave me....."100ATR2 .308, NIGHT TRAIN IV, 22" FLUTED BBL, MATTE SYN MC L". I got it all figured out now, except the "L". What does that stand for? Either way, I'm happy with this rifle. Especially considering the price....I got the gun, 4x16x40 scope (fairly cheap, $80) and Harris bipod, all for $375!