Deciphering a seal on the bottom of a Buddha figure (Characters identified: 乾隆御製)
Frankly speaking, I have very few knowledge about works of art, but for the characters, they look like "乾隆御制(traditional Chinese:乾隆御製)". These characters are written in 小篆, which is an old font originally popular in 秦 dynasty and then mainly popular in seals afterwards.

"乾隆御制" means "[this work is] made for the emperor of 乾隆, or the royal members".

By the way, I believe this work is fake, since the font of "乾隆御制" is generally “楷体", not "小篆". I have seen some works made in that times on the TV (there are many TV programms for identifying such works nowadays)and I don't remember a work with that font.