shadowshot a 40 is a cal. of weapon not a model ,he was most likely refereing to a glock called a baby glock (small frame easy carry gun)glock make's at least 10 or more style of weapon's,17, 18 ,21, &many more I"m not a glock fan(no reason why) so I don't no all thier model's,good gun's all,I know of one that has been torture tested for year's & still shoot's fine,like 50,000 rds. sand buried,salt water ,mud ,cold, heat, all you can think of & they are a simple gun to shoot, point & shoot,one safety on trigg. that's all. just remember powder gun's are like airgun's most need a little work when new & like air you get what you pay for.