The weapons in question include:
Small arms:
M16A2/A4 assault rifles and M4 carbines
M24 SWS sniper rifles
M249 light machine guns and M240 machine guns
Pistols such as Beretta M9 and Glock 17
Heavier gear:
M203 under-barrel grenade launchers and M79 grenade launchers
M224 mortars
M2 heavy machine guns
Sophisticated equipment like communication equipment and AN/PVS-7 and AN/PVS-14 night vision devices.
Hardware:
M1151 and M-1152 HMMWV (Humvee) vehicles
M1117 armored security vehicles
MaxxPro Mine-Resistant Ambush Protected (MRAP) vehicles
And even UH-60 Black Hawk helicopters
A Pentagon report from 2022 estimated the value of weapons and military hardware left in Afghanistan to be about $7 billion.
*under UN sanctions for terrorist activities