Very rare Mark I Pedersen Device, Springfield M1903 Mark I rifle, two rare 40-round Pedersen Device magazines, Rock Island Arsenal magazine pouch and M1903 bolt. Designated: "Automatic Pistol, Caliber .30, Model of 19 - Mark I" by the Ordnance Department, the Pedersen Device consisted of a replacement bolt and 40-round magazine which fitted a special Springfield Mark I M1903 with modified receiver, stock, sear and magazine cut-off. The Pedersen Device converted the bolt-action M1903 to a semi-automatic rifle that fired a low velocity .30 caliber pistol cartridge. Designed by J.D. Pedersen, the Pedersen Device was intended to provide the infantry with a close-range semi-automatic rifle for suppressive fire that could be rapidly converted to the standard .30-06 M1903 bolt-action rifle. The Pedersen Device was developed secretly with the intent of introducing it on the Western Front for the allied spring 1919 offensive. The Ordnance Department issued procurement orders to Remington Arms, U.M.C Company for 65,000 Mark I Pedersen Devices, 1,600,000 magazines and 65,000,000 cartridges. Springfield Armory manufactured nearly 145,000 M1903 Mark I rifles. No Pedersen Devices or Mark I rifles had been issued when armistice was declared on November 11, 1918. The Mark I rifles and Pedersen Devices were placed in storage until 1931 when a decision was made to destroy the devices and ammunition. Army records show that 64,873 Pedersen Devices and 60 million rounds of ammunition were destroyed in April 1931. The Mark I rifles had the special sears and magazine cut-offs removed and were over-hauled. Very few complete Pedersen Devices and magazines escaped destruction. Complete Pedersen Devices with magazines are among the rarest and most desirable M1903 accessories. This Pedersen Device appears to be complete with the original black-green parkerized finish. The right side of the cocking piece is roll-stamped: "BRIDGEPORT/PEDERSENS PAT.S PENDING" in two lines. The left side of the cocking piece has the serial number scrubbed from the upper portion and is roll-stamped: "U.S.A. 1918-MARK I". Both 40-round magazines have a black-green parkerized finish. One magazine is stamped with the manufacturer's code "SP" and the other is marked "BMG". The web magazine pouch is stamped: "R.I.A./7-19". The M1903 rifle has the special receiver with oval ejection port, special magazine cut-off and special sear. The stock is a standard M1903 stock and lacks the indentation below the oval receiver ejection port found on Mark I stocks. The receiver is roll-stamped with the "MARK I" designation and the barrel is dated "SA/12-18". Also included with the group is a WWI M1907 sling.

As described in "A".