And up pops the IDF argument again...
There is one very simple reason the Israelis carried without one in the pipe. When Israel was formed, the nation's military had to make do with cast-off weapons from other nations, with various manuals of arms, and in various states of repair. The simplest way to train without worrying about different safeties and guns mechanically failing during handling was to teach rack and fire. Add to that a wide variance of experience in their military, and it made sense AT THE TIME.
Fast forward. As they have moved their forces into modern weaponry, they are unit by unit starting to carry chambered.
Want to bet what condition Shin Bet uses?
-Mark