It's not as easy as we think. People generally only do things that reinforce their positive self image. Admitting errors is often unacceptable for most Pakistanis.
Keyword: Test.
Anyway, we shouldn't derail the thread with a training related argument.
Our soldiers have always trained to clear rooms with live fire, following initial training.
CQB is a vast topic, and IMO, airsoft can make teams complacent and develop bad habits.
Basics can't be taught without the real thing, and I'm not talking about recoil or the sound.
Even the higher quality airsoft guns are fragile.
Remember, skills not learned under stress cannot be repeated under stress.