Transparencyの解説
https://github.com/Ezekial711/MonsterHunterWorldModding/wiki/Understanding-Alpha-Channels

Transparency (controlled by Albedo's alpha but enabled in the MRL3)
(thanks to Aragaki)
Unknown 2 and 5 control the transparency values.
Unknown 2 closer to 0 for more tolerance for transparency (higher values will have alpha 0 be more solid until alpha becomes nonexistant).
Unknown 5 on values 4 to 7 control for it to be gradual and not binary transparency.
https://i.imgur.com/H1UD4sL.png
https://i.imgur.com/01S0Gdn.jpg
0 = 100% transparent


Ditherless Transparency
(thanks to NackDN)

Tested in material b3f9350a:44f2f535 (the general weapon material)
Set unknown 2 to "0," unknown 3 to "112," and unknown 4 to "1," as well as the Surface Direction to 1101 to achieve ditherless transparency

https://camo.githubusercontent.com/38e37c0900a3fc74bb83c6f95a63ce64b4a24878/68747470733a2f2f692e696d6775722e636f6d2f546469383351362e706e67
Transparency With Dithering
https://camo.githubusercontent.com/d6f240edbda7cfc13b851fea34b0f13032a9a141/68747470733a2f2f692e696d6775722e636f6d2f77496f5439454c2e706e67