SRG70 Peel and Stick Grip Enhancements for the Glock 42 SRG70 grip enhancements provide improved gripping of your polymer framed handgun. SRG70 material is Laser-Cut, Peel-and-Stick decal style grip enhancement. SRG70 has the appearance of fine stippling with a rubber coating. SRG70 will not damage your handgun or reduce its value like stippling will. This is a self-adhesive peel and stick friction improving product that attaches directly to your existing grip frame or removable grip. What's amazing is that something so thin and so light can produce such a dramatic difference.