The Rawlings GG Gamer Narrow Fit Series: G315-6B is a narrow fit with adult finger stalls. The glove could be a little tight on your adult hand.
The 2016 Rawlings GG Gamer Narrow Fit Series: G315-6B is a 11.75 inch glove that could be used as a utility model for a younger player (ages 10-12) thanks to its narrow fit design. This design helps create a smaller hand opening. For an older player, it could work for 3B but is typically seen as too small for the OF and too big for the middle infield.
The 2016 Rawlings GG Gamer Narrow Fit Series: G315-6B and the narrow fit design of the wrist opening will make this glove much tighter on the wrist than a standard adult model glove. As for comparable model that does not feature the narrow fit design, we do not have a similar model. The closest model currently in stock would be the 2017 Rawlings Heritage Pro 11.75" Baseball Glove: HPW315WDS .