I bought a Shield 45 when they first came out, and it has all the features that are incorporated into the 2.0 models...it just wasn't labeled as a 2.0. I saw a picture here recently of a Shield 45 that had the 2.0 designation on the slide, but the features are all still the same. As far as I know, if you buy a Shield 45, whether it's designated a 2.0 or not, you will get the most recent update of the gun.