Vortex released a micro red dot with the same footprint as a T1. I love Vortex’s VIP warranty. Battery life is only 7000 hours but I think I am going to give it a shot. I just ordered one from Midway to compare to the PA micro dot I just picked up. Yes the PA has a 50k hour runtime but I’m thinking the VIP warranty is worth 2 CR2032 batteries a year.