The Mark I was developed to use a automatic pistol-type receiver that would replace the bolt. It fied small pistol-type rounds out of a 40-rd. magazine. It was developed late in WWI and about 100,000 rifles were manufactured. The devices were kept in storage until ca. 1930 and them destroyed - a relative hanhdful survived.
The rifles, on the other hand, had the trigger and sear designed to fire the special cartridge removed and they were restored to normal service. The only thing different is the oval ejector slot oin the left side of the receiver and the "U.S Springfield Mark I" on the receiver.
CMP has sold quite a few - the typical one has nothing original except the receiver, although there have been some notable exceptions. Some have matching barrels (late 1918-early 1920) and a few even have correct stocks and a couple the original trigger and sear.
The rifles, on the other hand, had the trigger and sear designed to fire the special cartridge removed and they were restored to normal service. The only thing different is the oval ejector slot oin the left side of the receiver and the "U.S Springfield Mark I" on the receiver.
CMP has sold quite a few - the typical one has nothing original except the receiver, although there have been some notable exceptions. Some have matching barrels (late 1918-early 1920) and a few even have correct stocks and a couple the original trigger and sear.