First off, choke.
Second, Sopmod and Crane go hand in hand. Its called a SOPMOD Crane stock. So basically, i'll call it whatever I want thanks. It's more commonly referred to as SOPMOD by real shooters, and not people who only have experience with airsoft(you). Crane is more common terminology of airsofters. While it's not wrong, neither is Sopmod.
Third, it's not to blurry for me, maybe you need glasses. I can see it fine, thanks.