What type of No 4 sniper do I have?

[gdk771]

Hello,

I found this rifle in the back of my closet. It has been there since the early 90's when I bought it at an estate sale for $325. I thought that was pricey at the time (you could get a standard No 4 for $79 back then) but I really liked it. It says on the receiver MA 47 and under that 1944 and underneath that B3268x and finally TR 43 (see picture) It unfortunately is missing the scope. Does anyone know if the Gun Parts Co. reproduction scope and mount is any good? I would love to find an original scope and mount for it but am realistic that probably won't happen.
I really don't know much about it. Can the experts here tell me exactly what I have? I am enclosing pictures of the rifle and case. I have been told by some other helpful collectors it is a BSA model and has the correct zinc but plate. I also know that it was imported by Interarmco in Alexandria Virginia by rail in Dec 1959 (see pictures of freight tags).

I have also been told that the buttstock may have been replaced in the past. If this is the case it was back in 1959 or earlier is my guess as it matches the overall wear on the rifle. I hope to get this old girl up and shooting again for the first time in almost 65 years. I rarely post here but I have been a member of the forum since the mid 2000's.

Thanks for any comments or suggestions.