, oNot to sound like a prick elitist, but It's a Marine thing...I know, "everybody" calls them Springfields...But not around here ...There are several rifles we discuss-M1903, M1903A1, M1903A3, M1903A4...M1903s and M1903Ai1s were made by Springfield Armory (Ma., not the Inc. in Geneseo,Il.), Rock Island Arsenal (Il., not the Armory in the Pilippines) And Remington. M1903A3s and M1903A4s were made by Remington, and Smith-Corona (Yes, the typewriter people), and are hence not "Springfields". '03s and '03A1s had the rear sight mounted above the barrel, forward of the bolt; '03A3s have the rear sight mounted on the receiver, aft of the bolt; '03A4s are sniper variants with telescopic sights. There are subtle and not so much differences between '03/A1s and '03A3s and '03A4s that I'll let our experts enlighten you about. All have markings on various different stocks, that contribute to collector value. And some are "mixmasters" as we call them, which can be collectable, or just good shooters. If you just want to know a bit about your shooter, Welcome Aboard!..But if you want to learn more than you ever wanted to about a particular rifle, you've come to the right place...Have fun with your Remington, or SC. And as stated above $700 for a decent M1903A3.