Kel Tec P-11 Grip Extension Durable polymer construction Designed for use with magazines for the KelTec model P-11 (9mm) pistol. Also works with magazines for the discontinued model P-40 pistol Replaces the original flat bottom floor plate of the magazine providing extra room to grip the pistol with one additional finger for better shooting control and comfort (does NOT increase the capacity of the magazine) Easy to install in minutes IMPORTANT NOTE: This item extends the length of the grip only and does "NOT" increase the capacity of the magazine.