Sorry i've been off this forum for a month or so being busy with work and stuff. Of course i've conjured up some more questions . 1) Does anyone know a good website or book that gives a good overall firearm knowledge (Living in Australia, i don't really get close with many firearms) 2) Are civilians able to purchase the FN five-seven pistol.?3) What are the most common firearm ammunitions used? 4) From the most common ammunition, what are the distinguishing characteristics of each (like size of catridge and power). 5)Other than sporting, why would a single-action pistol still be used? 6) With a single-action pistol such as a colt 1911, is it possible to customize it to a double-action? 7) Does someone deal with a gun jam just by reloading?