M*CARBO Brotherhood

SUB2000 Gen 2, Trigger Bar Installation

There seems to have been a change on the latest version of the
Sub2000 gen 2. Mine has the receiver portion in 2 halves. The latest edition seems to have a one piece housing.

My question is…
Do I only have to remove ONLY the right side of the receiver housing to replace the OEM trigger bar with the new M’CARBO trigger bar replacement?

Another indication of a GEN2 model modification. My plastic collar would not stay in place on end of the receiver. So I ordered a new collar from Kel-Tec. The new collar is metal, yeah, real metal! It is also threaded. Interesting. I am sanding down the rear of the receiver halves so I can utilize the treads on the new collar to hold it in place.