Why would you not take the opportunity to acquire one of the very rarest US military firearms? There are only a handful in existence world-wide. The value of the piece will only continue to rise.
The 8x50R guns are rare, even if deactivated. Functional ones are seldom seen, notwithstanding being offered as surplus, live or dewat for $15-$30 close to 60 years ago.
The CSRG was a key factor in the evolution of infantry tactics still practiced - the squad of riflemen, with an automatic rifle team, and one squad member equipped with a grenade launcher.