Fixxxer Brand custom molded Grip Plug is designed to keep dirt and debris out of the action of your Glock also serves as a magazine funnel to aid in reloading and prevents the butt of the Glock from ripping through your shirts. <p> Fits: 17,19,20,21,22,23,31,32,34,35,37,38 </p> <p> Will not fit the SF models including the 21-SF. Will not fit Model 42 </p> <p> Please Note: Does not fit GEN 4 </p> <p> You will love the quality of FIXXXER products. </p> <p><b> Fixxxer LLC </b>is proud to be an American Company. We stand behind our products, period. FIXXXER COMPONENTS US TRADEMARK # 86021760 IC 013. US 002 009. G & S </p> <p> Disclaimer - "GLOCK" is a federally registered trademark of Glock, Inc. or Glock Ges.m.b.H. Fixxxer LLC has NO affiliation in any manner with, or otherwise endorsed by, Glock, Inc. or Glock Ges.m.b.H. The use of the word "GLOCK " on this page is merely to identify which firearm these parts or components are compatible with.</p>