I have had the sub 2000 for a year now and love the weapon, the compact concealment, accuracy and the simple disassembly/reassembly. A lot of talk on the new optic mount and it looks great with a price tag of $100. I just decided to put a $10 45 degree mount and a $30 red dot on it. Zeroed and accurate at 25 yds. I can almost completely close it down on itself and are we really trying to fight with a locking device when it’s time to “do work”
I made several stabs at this same 45° idea and could not get the Sub to close either. There was always some part of the mount or the optic that prevented closing.
45 degree mout with a tacticon micro red dot works predictor v3 micro dot red dot site
The claw style offset mount that sits between the picatinny slots worked best for me. It’s not a true 45 and sits closer inline to the iron sights than a M-lok.
I admit I had to add a riser between the mount and red dot because the switch housing was rubbing the buffer tube when fully closed using a Burris Fastfire 2.
Eventually i ground off the picatinny slots and perma-mounted a riser on the claw mount which now looks like one piece and sits as low as I want to close.
Because the sub2k has a plastic picatinny I recommend a metal shim across where the two set screws come into contact with the plastic. This keeps it nice and tight without much damage to the rail side.
Can you share some pictures. I think I recognize your descriptions but I’m a long way from certain in this understanding.