"Dude! Got this on net. Plg prmes sheld in 2 shldr n arm. Acid cnanon!"
Translation: "Dude! Got this info on the net. Plug Sentinel Prime's shield into his shoulder and arm. Acid Rust Cannon."
He damn sure was right. I kid you not, this has to be an intended feature. Has to be.
Still has the blaster sound effect, fits perfectly into the shoulder and forearm.
I didn't believe it until I tried it myself. It really is the Acid Rust Blaster, and it's been there all along.



As you can see, it really does work. Go figure.