Well, I'll say it's certainly an "interesting" piece - I think I see quite a few major "FN" parts (the receiver, stock from an M249, ...), but the handguards are definitely AR...

Generally, I'm kind of leery of "parts guns", and I think I'd be especially leering of a "franken-gun" like this one.

The "WOW" factor will fade on the range when they see you clearing malfunction after malfunction, and you'll then face the "HA, HA, HA" factor.

Otherwise, I'd agree with what's already been said.