Personally, I'm seriously impressed with your creativity & workmanship, particularly in light of the limited tools at your disposal. I've seen much lower quality of work produced by people with machine shops available.
You've given me some ideas, for sure! Hmmm...I might have to drag out that old .22 semi action & barrel sitting around...lessee now...big bock of aluminum? Check. Metal tubing? Check. Metal lathe lubed? Uh huh. This could be fun...and useful.
Could be you've invented a whole new class of rifle..maybe "Tacti-practical?" or "PractiTactical"?
Anyway, I'll be waiting for the next installment!!