I have always liked Pachmayr grips for my guns, but for this one I went with Tac Star. Tac Star and Pachmayr are owned by the same company, their advertising suggests that they are now sharing designs. This Tac Star set feels as good as some of my Pachmayr's on other guns, but was about half the price. Huge improvement over stock.

This pic shows a Pachmayr on the Mossberg, and Tac Star front and rear grips on the 15-22.