It hard to find exact specs on these rifles. Everywhere I have looked gave different specs.
I found a site on the web yesterday (can't remember it now

)that sells a repro of the scope base & 4 screw rings for $149.00 USD.
I've seen pics of one at the Springfield Armoury Museum & it had 2 screw rings with the screws through the top & didn't have the base with the front squared off as opposed to having the top front corners rounded off.
I have also read that the 2 screw rings were used, but they had the screws coming up from the bottom.
These are the rings that I managed to find & use.
As for the scope, They used the Redfield Accu-Trac 3x9 with a round Ocular lens, tomb stone range indicator & fine cross hairs. I managed to get one off this site from a guy who's uncle bought it in I believe 1966.
I've seen them on E-Bay, but usually go for over $400.00.
The first issued scopes & bases/rings were off the shelf gloss black.
Later on the scopes were anododized green.
The rifle/scope pictured in the Snipers Central web page shows theirs with the incorrect (& noted as such) Redfield Accu-Range scope that has an oblong Ocular lens.
I used the Rem SPS Varmit & cut down the barrel to 24".
Once again I found many different specs on the muzzle.
I have read conflicting info that states that they had a flat crown, 11 degree crown, a 11 degree target crown.
The finish isn't exact as the originals had a flat black bolt & floor plate with a Military greenish/grey parkerized finish. The SPS Varmit is nice because of the all black finish.
Please don't think that I know everything & no one else is right.
I think that back then, alot of parts were just thrown together.
This is the info I have found surfing the net, & used to build a "close enough" M40 without breaking the bank.
Now just have to get out &
