Sorry if this sounds like a noob question,
this is really weird.
last week, i removed the AR's from my rapid fire as-20 but when i assembled everything back, it did not fire at all.
then when put the AR's back in and everything works fine again....
(AR's were not permanently fixed and could be removed without using any force or modification - looks similar to this picture that someone else posted)
can anyone help to explain/clarify?
thanks