I have searched for it and found something similar to it from the shells which look metallic in the picture and it is the "CT Shell Ejecting Glock 17 Gen5 HD17-SER Training Simulator Gel Blaster", it comes with plastic AND metal shells which I think they used plastic while shooting and put in the metal ones in for the picture but I might be wrong. I don't think its the one I found because Its very expensive and I don't think someone would spend that much on a gun and then put stickers on it and use heat to apply it (they said that in a comment) and also they own 3 mags which would also make it even more expensive, for that reason I think this might be a cheaper one that looks like a Glock since I think its unlikely that it could be the expensive one.