Regulated materials is a Quest in Escape from Tarkov.
||Come on in, warrior! Still breathing aye? That's fine. Look, there is a problem. There's this customer, showed up outta nowhere, an urgent order and the bitch himself wants specific parts of equipment, the ones our glorious mother Russia produced, and it’s notorious for me that the good of the state has to be sold and judging by the accent, the fucker is from abroad. But the cash is noble and connections he provides are no joke. In general, you need one military battery and a dozen or so of 30mm shells. I bet you'll have to sneak on the military base for it... The place is inhospitable, I know, but you won't regret it when the checkout time comes. Plus, I’ll provide you with a special gift for this. Will you take the risk?
||You actually did it! Well fucking done. So I keep my word. Here's your reward.
The items required for this quest need to be found in-raid. The only map with them is Reserve, but there is a small chance for a scav to have it in his Army bag backpack. The 6-STEN-140-M military battery is a large 4x2 slot item that resembles a black/brown box. It can most commonly be found sitting on or near tanks. The OFZ 30x160mm shells can be found throughout the Reserve on tables, shelving and at the rear side of every tank on the map, on the ground.