Oh, yeah, the classic "snub nose." Small-framed, snub-nosed revolvers, like Smith & Wesson J-frames, have been a go-to for years—sometimes as a backup weapon, other times as a deeply concealed carry option. What they lack in capacity, they more than make up for in concealability.
The 640 Pro Series stands out as one of only two J-frames from Smith & Wesson chambered for .357 Magnum. That said, .38 Special is the smarter pick for most, considering how brutal .357 Mag recoil can be in such a compact package. Still, the option’s there for the bold.
Beyond the chambering, you’ve got a small J-frame with a shrouded hammer, making it a slick, snag-free choice for defensive carry. It’s also one of the few J-frame models with dovetailed iron sights—a nice touch that simplifies sight customization. That said, anyone hunting for a little snubby to conceal should also check out the newer Ultimate Carry J-frame models.