I just picked up a M1 Carbine by Rock ola. I had previous carbines but after years of buying, lost most my good firearms during a 2 1/2 year divorce. Now with no one around to say yes of no, I am re-inventing my life. So, I bought a Rock ola from someone I work with who has had it for a while, was his dads. I am trying to find out more info on it. I used to buy M1 carbines from a huge box of carbines, your choice $90 at the local gun show. Now I paid a grand because it was so nice and I have been watching prices go up consistantly. Heres what I saw when I bought. Serial number in the 4625--- range, serial number on nice redish stock, I believe it has the name of Trimble TN under the sling by the oiler. Has a couple of cartouses on the stock a horseshoe with two dots. Firing pin is either NL-NI-N1, Extrac. WI, bolt SG, Hammer AMB, charge handle SG, Selec. EI which was stamped over some kinda of semi cirle, Trig SG, Barrel is Rockola but no date but says N.A. Co. Ridgefield NJ, Frnt site R1A, Barrel band JMO or JMQ, Bayo lug EM-Q, by Rock ola on the muzzle end of barrel is a "O", Mag release is sideways M over a small AD, There is also a U1 or O1 stamped under the pistol grip. The sling snaps say "KLIKIT PULL " with a small star. The gas piston system under the barrel is also marked Rock ola. OK, so I trust you guys can help me out, trying to peace together a little history. I know W is winchester and I think SG is Saganaw, The NA co, Ridgefield NJ rolled on the barrel is interesteing to me. I am hoping that I have a nice well made rifle. I did a complete disasembly of the trigger group and mag release/ safety parts and they were covered in the normal rusty looking grease, but the parts cleaned up and were in great shape. No trip to the range yet, but ammo buy is in the future. Let me know what you think. Thanks in advance and I hope this made you put on your thinking caps.