Welcome to G&G!
Yes, that's a feature about these rifles I really like. Locking the bolt allows a bit better accuracy, IMHO. We don't have the reciprocating mass of the bolt to throw things off. In semi-auto mode, you'll also notice the odd 'click-clack' action - the bolt stays back until you release the trigger. Seems really odd til you get used to it.
You inspired me - I'm going to take mine to the range this morning! Been awhile since I shot it.