Well, the kit arrived today and took about 3 minutes to install, no issues at all.
It definitely ups the recoil and RoF, as expected! So far, I am very happy with it, it'll definitely be staying installed. The recoil now reminds me of my old GHK G5 with RATech steel bolt
I will probably do some testing later to see how it impacts the gas efficiency, how much weight has been added to the bolt, etc
Now, if you'll excuse me, I am going to go back to shooting it 😅