It looks very plasticy from the pic, pretty sure I have seen a mouse that looks exactly the same as it as well which means it is an OEM design, I could be wrong though.
It will be a shame if it is a laser sensor, they all have built in acceleration and angle snapping. optical>laser especially for FPS games, I always had laser mice in the past but when I got my Rival with an optical sensor the difference was very noticeable and it is much more accurate.
NZXT Switch 810 - i7 6700K - MSI Z170A Krait - 32GB Corsair Platinum SE - MSI 1070 - Crucial MX100 256GB SSD - Samsung F3 1TB HDD - Corsair H100 - Corsair RM1000i SE - Asus VE247H
PC Audio: Asus Xonar STX - Sennheiser HD650.
Portable Audio: FiiO X3II - Audiofly AF140 - Etymotic ER4s - Fidue A83.