They are not military surplus.
Military Ammo Box Heavy Black Pelican Plastic 25mm Linked 30 Cartridges Empty
VINTAGE AMMO BOX £6.00 - PicClick UK
Plastic Ammo Box Military Style Storage Ammo Can Lightweight High Strength Ammo Accessory Crate Storage Case Tactical Bullet box
Plastic Ammo Box Military Style Lightweight Storage Ammo Case High Strength Tactical Bullet Box Ammo Accessory Crate Storage Can
Ammo Box Plastic Polymer Black New Military Spec UK Made!
MILITARY AMMO BOX Heavy Black Pelican Plastic 25mm Linked 30 Cartridges Empty $15.00 - PicClick
Military Grade High Impact Polymer Storage Container Small 30 Cal Ammo Can Ammo Box
MIL-TEC Plastic ammo boxes for U.S. CAL.20mm OLIVE
Ammo Box Plastic Tool Case Military Style Storage Can Heavy Duty Caliber Bulk Ammo Crate Lightweight Tactical Bullet box - AliExpress