Shop › AGENCY MAG EXT FITS GLK17 +5 SAGE OD AGENCY MAG EXT FITS GLK17 +5 SAGE OD $54.00 Agency Arms +5 Magazine Extension, Fits Glock 17/22 Magazines Only, Aluminum Construction, Anodized Finish, Olive Drab Green, Sage Dynamics Engraving BP-G17-SAGE Quantity: Add To Cart Added! Agency Arms +5 Magazine Extension, Fits Glock 17/22 Magazines Only, Aluminum Construction, Anodized Finish, Olive Drab Green, Sage Dynamics Engraving BP-G17-SAGE