The machines are likely busy 24/7, cranking out the known quantity of the BRN-180 uppers for the lucrative American market. The BRN-180 is more affordable then either other AR-15 piston uppers, or, as a complete rifle, other piston designs, while providing acceptable to good performance with excellent durability now that the bugs are worked out. With the fear the Biden Administration will make gun laws more restrictive, PWS can continue to make the BRN-180 in quantity for Brownells, and has no need or desire to divert production to the Canadian market, with both the risk of the Canadian government interference, as well as dealing whatever bugs came from modifying the BRN-180 upper to fit the NoDak 170 lower.
IRunGuns should partner with Range Warrior Accessories to either bring back their RWA-180 rifle or get them to produce a licensed PWS design for a modified BRN-180 upper with as many Canadian sourced parts as possible, still using the NoDak lower.