Hey whats up not sure where to put this so I thought why not here, anyways I have a S&W right now but nothing great. I plan on getting my ccw soon and looking to get a Glock now every where I go seems like eather you love them or hate them any reviews? or comments thinking of model 21 or 22
As one of the resident Glockaholics, I may be able to shed some more light on this.
Both guns are full sized pistols. You can certainly use them for CCW, but the problem here, is that you're going to have to be very selective when choosing a holster, since you don't have much margin of error with guns of these sizes.
The model 22 is a full-sized (4.5" barrel) pistol chambered in the .40. It's a great gun, and the most popular choice amongst law enforcement folks these days. You get a 15+1 capacity, and the recoil is actually quite easily managed, since the flexible polymer frame helps soak up much of it. Accuracy is quite good, and I'm glad that they are using a 1 in 9.84" twist.
The model 21 is a full-sized (4.6" barrel) pistol chambered in the .45 ACP. Also a very soft-shooting .45 ACP. The grip thickness, though, is a bit greater than its above cousin, and those with smaller than average sized hands may find it a bit too wide. This is a very accurate gun, and reliable with just about any .45 ACP factory ammo (except for semiwadcutters).
I would actually encourage you to try the midsized models, as well. The Glock 23 has a 4" barrel, a 13+1 capacity, and still handles recoil of the .40 very nicely, as well as being easier to conceal.
Also, don't discount the Glock 19, which is similar to the 23, but chambered in the 9 mm (15+1 capacity).
You may also want to give the subcompacts a whirl (26, 26, 33, 39). If you like the two-fingered grip (as opposed to the standard 3 fingered grip), and don't mind curling the pinky under the magazine baseplate, then these are fantastic guns for CCW.