Picked up a set of Traction Grips for my BG380 and really like them; just passing this along for those looking for a little better grip on their gun (especially pocket sized guns).
-They work. The grip surface (rubber in this case but sand is also available) decreases the gun moving in your hands; especially during rapid fire strings.
-Cost. The BG380 set was $9 shipped.
-Several colors are available.
-They're very thin and don't add much bulk at all to the size of the grip.
-Available for a wide variety of guns
-Honestly I don't have any yet...
In summary, they're a good product at a good price and a great alternative to stippling your frame. Here's a video discussing the pros/cons and demonstrating the product by putting a little lead downrange: