45 ACP cartridge. Thompson’s Trench Broom strike a number of snags in development, as neither a fuel-operated method nor a straight blowback proved ideal for what he envisioned. What he needed was a retarded blowback procedure. By mid-1941, the 1st M1 carbines ended up delivered to entrance-line troops with around https://margotr493tfp1.wikitron.com/user