The 27-year old midfielder was selected in Holger Osieck's squad of 19 for next Saturday night's friendly with Paraguay and although his form has been stellar in the A-League, McKay feels he is lucky to be a part of the Socceroos make-up.
"It's a bit of a surprise, and with the guys coming back now, it's a fairly full strength side," he said.
"I'm glad to have an opportunity and want to make the most out of it, get into camp and do well.
"With the new management coming in, a whole lot of things change, different ideas and I'm glad to be given this opportunity."
McKay added that it was refreshing to see the new Socceroos boss look at players in the local competition, with six A-League players in the squad, rather than thinking the overseas stars are the be all and end all to play for the national team.
"The coach has said he'll reward players no matter where they play, and in the A-League we're playing regular matches and not every player overseas is doing that," he added.
"He's come to two of our games now which is great, and he's going to watch all the A-League teams which is great for the Aussie boys because it gives everyone an opportunity to perform each week.
"If we can prove ourselves, more (A-League) boys will be a part of it in the future.
"It's a good league, playing-wise it's always improving and I'm proud to be a part of it."