Got a query from a writer friend about a Glock handgun, (HQ in Austria, but with other plants around the world) and while I'm hardly the world's expert on guns in general, and this kind in particular, I knew the answer, passed it along, and was happy to do so.
Lot of writers put these pistols in the hands of their heroes and villains, and they are what most police in the USA carry these days, so in the continuing series of Gun Notes for Writers, some basic information about Glocks.
I won't go into great detail -- you can look at the pictures above and get a lot of what you might need, but there are two things you should know, and that writers seem to commonly miss, even those who should know better.
1) Much of the Glock handgun is made from black plastic. High-tech, strong, wears well, but plastic. Not the barrel or the internal parts, but what you see when you look at it is mostly plastic. It will not pass a metal detector because there is enough steel in it to set the scanner off.
2) Glocks do not have external safeties, as in "He flipped the safety on." or "He thumbed the safety off." Not there. No button, lever, or other controls. Yes, there are internal thingees that make the thing safer, but Your Hero won't be fiddling with them. Pretty much, if you don't physically pull the trigger, it won't go bang.
More information here.
A general admonition: If you are going to arm your Heroine or Hero and you aren't absolutely sure of the hardware you give 'em, do not go into detail. Just say "gun," because even using "pistol" or "revolver" will get you in trouble if you don't know the difference. Better -- ask somebody who knows, or go look at one of them down at the local gun store. If you don't know it, don't say it, 'cause if you do, you are just going to have the gun nuts shaking their heads and calling you "stupid ..."
Which you will be for not doing basic research.
Lot of good and bad guys in novels will carry sharps, tactical folders, neck-knives, sheath knives, automatics or assisted-openers, even friction folders, aka grandpa's pocketknife.
You don't need to know a lot about them -- you can say "knife," and maybe how long it is, but if you wander off into brand names or point types and edge-grinds, you had better know that "tanto" is not the Lone Ranger's sidekick ...