Even though the M1 carbine looks similar to the M1 Garand, the two guns are actually very different. First, the M1 carbines bullets, the .30 Carbine, are much smaller and lighter than the Garand's .30-06 bullets. Second, the gun itself is much lighter, smaller, and shorter range than the Garand. The M1 carbine weighs less than half of the Garand. Third, the M1 carbine is loaded with box magazines that holds 15 bullets, while the M1 Garand is loaded with clips that hold 8 bullets.