Royal Nonesuch has jokes:

0:44 – The testimonials haha

1:58 – Shooting the piece of metal to set off the round in the barrel.. that’s a pretty cool idea.

3:08 – haha plastic hose barrel.  Worked surprisingly better than expected.  Although, like he said it probably had a lot to do with the vise.

5:10 – That shape.  Keymod AF.

I’m not really surprised that the steel ones with the tight fit and worked the best.

Thoughts?