You have a semi-custom or custom rifle. My uncle ordered a barreled action from Flaigs back in the sixties and had it put in a myrtlewood stock. It's a 7mm Remington Mag, too, and I bought it from my aunt after his death.
It is very difficult to determine a value on such a gun because it's a one-and-only item. Just the action is probably worth upwards of $300, though, and I would guess the Weaver scope may be worth $100 more. Bottom line: it's worth whatever you can get someone to pay for it. Mine is worth much more to me as a family heirloom than its value in dollars. It's a good, solid, hardworking rifle, too.
Brownell's sells all sorts of sights, though I cannot imagine why you would want to put metallic sights on such a gun. Just go with a good scope and you're set.
