I guess it is original, as the hole is perfectly centered, and looks smooth on the inside (not done by a ‘regular’ drillbit).
But i am not sure as i do not have any documentation nor drawings on the XM1031 / XM1032 /inert XM1032…
Only thing i found online was this:
[quote]The XM1031 and XM1032 cartridges shall be designed to comply with the Interface Control Drawing (ICD) for the XM301 three-barrel gattling gun system manufactured by General Dynamics Armament Systems (GDAS), Burlington, Vermont.
The Department of the Army, TACOM-ARDEC, Picatinny Arsenal, N.J., has awarded a $2.4 million contract for the development and production of 6,000 rounds of 20mm XM1031 Lightweight Multi-Purpose Cartridges; 21,000 rounds of 20mm XM1032 Lightweight Target Practice (TP) Cartridges; and 1,000 rounds of 20mm Inert Lightweight Cartridges. The XM1031 (LTP-P) and XM1032 (LMP-P) Cartridge are used by the U.S. Army on the Comanche Helicopter.
Notice Date: September 6, 2000
Contracting Office: US Army ARDEC, AMSTA-AR-PC, Picatinny Arsenal, New Jersey 07806-5000
I sure hope someone has documentation/drawings on these rounds…