.60" caliber. 42" barrel length. SN: 2187. OD Green spray painted finish overall with wood base and internal metal surfaces left in the white. Non-firing double scale cutaway training model of the Browning Model 1919 pattern machine gun. Item comes with a barrel showing serial number 156478 that has been fitted with a duct tape retained spacer to hold it fast within the forward receiver. The builders plate for the unit reads NATIONAL GUARD OF THE UNITED STATES/MODEL BMG. CAL .30 M1919A6/DEVICE NUMBER/U{Anchor}S 3-F-7/SERIAL NUMBER/2187/DEVELOPED AND PROCURED BY/OFFICE OF NAVAL RESEARCH SPECIAL DEVICES CENTER/U.S.N. CONTRACT NO. N140S-17583B. The cutaway lacks the buttplate that would have been standard on the 1919A6, and also lacks the barrel jacket, the topcover, rear sight, and has suffered a fracture on the muzzle that has broken off the expansion chamber cutaway and, presumably, the muzzle nut indicative of a 1919A6. The model shows signs of repainting, and has numerous cutaways on all sides showing the function of the trigger plate, the buffer, bolt operation, and more.