bolt

The Pedersen Device turned the bolt-action Springfield 1903 into a semi-auto firearm. This was top-secrect stuff back in 1917.

The Springfield 1903 Evolves, Sort Of

What the Springfield 1903 could have been, might have been, but never became. “It began in the late summer of 1917 when Mr. John D. Pedersen … walked into Ordance chief Crozier’s office and offered him the chance to see something truly amazing. … Producing a Springfield, Pedersen squeezed off a few shots in...