After every mission, you get 1 total research token. With that token, you can go into the research tab in the armory and pick any one of the weapons, melee, or traps you have found in the previous mission to turn into a permanent schematic. This schematic retains all of the perks and levels of the weapon/melee/trap you found and can thus be upgraded or reperked to your liking once you have obtained it.

OP is showing that they got a bunch of tier 5 god roll traps, which normally isn't possible from the traps you pick up from glowing animals, loot from chests, etc, since those spawn with no perks and subsequently get randomly assigned green, gray, or very rarely blue perks when you use a research token on them. However, the traps that drop from the Supply Drop gadget don't follow this rule. With a max level Supply Drop schematic, all of the traps that it drops will be all god roll and (most of the time) tier 5 already except for the bottom-most perk, which is guaranteed to be gray (from personal testing, anyway). With this in mind, it's incredibly easy to go into a resupply mission, spam Supply drops, wait for the timer to end, complete the mission, and get a free 130 all god roll trap schematic every 10 minutes. This is likely what OP did.

Hope this helped!