I was thinking about ordering Knight's Ultimate Range Rod. Two questions- is the jag interchangeable so I can use it both my 45 and 50, or would I have to buy a seperate rod for each caliber?

And, at the checkout screen there's a place for a coupon code. Anybody have one they want to share? After shipping it's almost $50.

yep! One rod - many different ends

I do not have a code at this time... You usually have to pick one up at a 'gun show' if Knight is working the show. You could call them and ask about a coupon code, maybe the ladies at the front could give one out..

You don't have to buy a separate rod for each caliber, just change the jag out. I know that is probably what you meant.