Among my group of shooting buddies, all with identical cultural backgrounds as mine, I have noticed a curious trend when they first get into gun ownership. The first gun they buy will be the cheapest M1911 they can buy. Curiously, the next gun will be an AK47 clone, but anyway...
When we go shooting, there they are with 1911's ranging from plain-Jane SA 1911 to cute and shiny Kimbers, and among them I stand, the only pariah, holding in my hand "tactical tupperware", sheesh!, a PLASTIC gun! And as they clear jams, stovepipes, FTFs and well as stopping to reload, I keep blasting away with my G30, and soon enough they ask to shoot it, or I offer it up for them to try. Yeah, I get the "grip feels weird" comment a lot (after watching the video above, now I know why!), but it has never jammed, never FTF'd or FTE'd and has never failed to return to battery upon chambering and also never fails to lock the slide back on an empty magazine.
Soon enough, they buy a Glock!
As a FA instructor, I see a lot of different guns being shot a lot of different ways, and I will be the first to say that for personal defense you need to have a gun that fits you, regardless (almost*) of the brand/model/design/caliber. And I will say that the thickness of a Glock's grip has turned off many potential Glock owners, and that is fine with me. The bottom line is:
you can NEVER accurately shoot a gun that you cannot comfortably hold in your hand.
*I say "almost" because there are guns with a disturbing history of failures, some simple but chronic feed failures, some witha history of blowing up, and there are some calibers that have a somewhat questionable reputation as far as being able to stop a threat.
That being said, I tell them, will your (fill in the blank with gun name) pass the parachute test: will it open when you need it?
I have 28 handguns (including 3 revolvers), of which 2 are Glocks. There is not a single M1911 in my collection
