yeah. there are save editors that allow you to mess with items. most use them for optimizing parts, but there are people that just make totally impossible items, such as the Atlas Vindicator Ghast Call i was sent.
i get their use, to a point. parts variation on guns in BL3 is obscene. there’s way too many combinations (most have 8-10, but the highest are 13-14 varying part/accessory slots) and the performance of some weapons swings massively based the part assembly. Hyperion and jakob’s shotguns are a really good example. their potential output with maxed out pellet count is ridiculous compared to their minimums. the x25 coachgun is a combination of rolling the coachgun barrel out of the 3 possible barrel types and 4 correct parts, 2 of which are accessory slot parts, meaning that there isn’t even a guarantee that the weapon rolls a part in that slot.
or take the Conference call. a base level parts-incorrect conference call doesn’t even functionally do damage. a parts correct redundant CC is one of the highest exploit free DPS weapons in the game. it can drop TVHM M4 GW before the platform tilts, which is crit swapping scourge territory. these optimized shotgunss aren’t functionally usable due to pellet count knockback, but the point stands that the variability in item quality makes play testing extremely difficult without the use of an editors to ensure the quality of the test. a lot of the builds we have for all VHs are based around items that don’t need to roll insanely well, either because they have little to no variation on the pieces that matter, or they’re just powerful in any form.
artifacts are another variation obscenity. just to get the correct base artifact you want, you need to roll a 1/16 secondary ability, then a 1/25 primary ability (there are 19 secondaries, but 3 are from specific sources only). then, you roll 1/29 primary stats and 2/34 secondary stats. the probability of getting the correct artifact to roll with even 2 of the stats you want is insane.
i don’t condone their usage, but if your enjoyment from the game is theorycrafting builds and then testing them, i don’t think BL3 supports that kind of player in its current item variability, because the chance of having an optimized weapon is so improbably low.
EDIT: if anyone played high end late game diablo 2 PVP, Rare ethereal repair weapons and armour pieces for ZvZ and BvB are the closest comparability i can think of for the parts variation rarity in Bl3.
EDIT2: this is also before accounting for the correct anointment.