In February 2015, a1903A3 National Ordinance Military rifle in good condition (matching numbers, shootable) is worth approximately $ 900 - 1,300 depending on the rifle's actual condition.
Chat with our AI personalities
First off, you should know that the National Ordnance rifle was never a military-issue weapon. National Ordnance made their own receivers, assembled the rest of the rifle with government surplus parts, and sold the results on the civilian market back in the 1960s. Now, that's not to say they're not good-shooting guns -- they're just not military-issue ones.
If you're just looking for a shooter, go for it. If you're looking to collect mil-surp weapons, then this is not one you want. Pricewise, I'd say in the low $200s. I doubt I'd want to go much over $250 for one.