No doubt that it is a very challenging task. My gripe is the premature announcement. They do this all of the time. This reticle AND a new turret assembly were announced at the 2017 SHOT. I would assume that being S&B, they know the complexities well enough to be able to quantify the time it takes to make it ready for production.
If I had the same kind of estimation error in my engineering world, I would be fired.