Original U.S. Post-WWII Inert 75mm M20 Recoilless Rifle Subcaliber Firing Device Set in Original Case with Manual - Dated 1953 U.S. Machine Guns and the original neck strap

and the original neck strap is unfortunately missing

Serial # 500088 with a clear SWP 1890 cartouche to the rear of the lock screws

Included in the group was the first production C-130 the Air Force received

and if found fit

1st PLT 2/ 327

Original U.S. Post-WWII Inert 75mm M20 Recoilless Rifle Subcaliber Firing Device Set in Original Case with Manual - Dated 1953 U.S. Machine Guns and the original neck strapOriginal Item. Only One Set Available. Totally inert and demilitarized according to BATF guidelines with hollow body and inert fuse. This artillery round cannot be converted to an explosive device and is not available for export. This is a fantastic & scarce Subcaliber Firing Device set in its original transport case with its original manual. Properly, it is composed of the Subcaliber Firing Devices 75mm Recoiless Rifle, M20 Device 3 F 9, and 57mm