I posted about this a while ago, but never took the time to take high quality photos of it.
A gentleman owed my father some money and instead proposed a trade. Among other things, the guy offered my father this rifle. My dad isn't a gun guy, but he knew I would appreciate it... This rifle ended up in my collection as a result.
The barrel is Underwood 1944, and if the resource I found online is correct, the Standard Products receiver is also dated 1944.
This rifle was originally living in a ugly plastic SWAT/ Tactical stock. I bought the stock and fore grip at Numrich, which is like 20mins away from my house.