Belt fed .22LR.
Bullpup 22 LR
For we who grew up tall and proud, In the shadow of the mushroom cloud
The lowers are already available from Nodak Spud. So I'd say kits to make a full Ar180b. Uppers and lower parts kits, even full rifles for that matter.
"Victory favours the prepared"
Take down pin for the Kel Tec, KSG. with QD cup...
5.45x39 semi auto rifle... with steady supply of surplus ammo
Reasonably priced, modern rifles that shoot 7.62x54R, 8mm Mauser, 6.5x55 Swede, 6.5 creedmoor, etc. (Things other than your common .223,.308.30-06 etc) and left handed options would be a huge bonus