[BattleRifleG3]

I've been thinking for a while about making a 357 Rem Mag semi-auto carbine, and wonder if it would work in a recoil operated carbine or if it's too heavy for that, and would require a locking bolt and a gas system?

If it's recoil operated, I could use the same design for 45 ACP, 40 S&W, 357 SIG, 9x19mm, and 7.62x25mm. If it were gas operated, I could use the same design for 44 Rem Mag and 45-70.