i have always wanted a glock just b/c they look cool. i know this is a bad reason to want it but i'm kid! haha anyways i heard that glocks are known for jamming up(if that is what you call it) so my question is...are glocks just a well known company or are they good products? also i was reading this magazine about changing a glock to a rimfire? what is a rimfire? i have a few guesses from looking at the name but they are probably way off?