I have never jumped out of a helicopter with a knife in my teeth, won any shootin' trophies, or designed a unique firearms operating system, but I've spent many years slinging guns across the glass, enough that I'm something of a Subject Matter Expert on the buying habits of Cletus. Speaking from that middlin'-lofty height, I feel comfortable in saying that it's a good thing this looks like it's going to cost more than $50, or the ranges of America would be covered up in bandaged Cletii...
The overlap of "people likely to want this" and "people able to afford it" is hopefully very tiny. If you can't spot several big problems with the very concept, I want you to go stand in a corner and feel bad about yourself while the rest of us talk about you behind your back. At least those ludicrous pistol bayonets will let you clear a malfunction without giving you stigmata.
What I want to know is how that guy busted all those ridiculous "gun kata" poses while keeping a straight face?
EDITED TO ADD: Well, first he disabled comments, then he turned off embedding, and now he's pulled the video from YouTube entirely. I hate it for him; it's gotta sting to hold your brainchild up for everyone to see, only to have people point and laugh. Obviously some time and effort went into the design and manufacturing, but time and effort alone don't make an idea good.