He appears to have done loads of function testing prior to hitting record:
Strike #1 – 0:15 – “the clip… I pull it out”
Strike #2 – The remainder of the video
I’ll give him some style points for having the DIY spirit to actually bring his weed smoking pipe dreams to fruition. Putting a gun in your mouth (fake or not) in my opinion is never a great idea though.
Hat tip: Peter