Glock Fiber Optic Front Low Profile Small Frame ( ABA130 )Fits all standard size small frame Glocks. (9mm, 357 SIG, 40 S&W)* Does not fit Glock MOS, G42, or G43 *Kit includes: 1 Height Fiber Optic Serrated Front Sight .195" Tall 1 Blank Serrated Rear Sight .200" Tall with .125" wide notch featuring shortened front ledge that will fit slides cut for an optic Fiber Optic Rod 2" 1.5 mm Red 2" 1.5 mm Green Screws Front sight screw Rear sight set screwGlock Fiber Optic Low Profile Large Frame ( ABA134 )Fits all standard size large frame Glocks. ( 10mm, 45 Auto ) *Does not fit Glock MOS, G42, or G43 *Kit includes: 1 Height Fiber Optic Serrated Front Sight .175" Tall 1 Blank Serrated Rear Sight .200" Tall with .125" wide notch featuring shortened front ledge that will fit slides cut for an optic Fiber Optic Rod 2" 1.5 mm Red 2" 1.5 mm Green Screws Front sight screw Rear sight set screw DISCLAIMER: This product is not manufactured, authorized, endorsed, or warranted by GLOCK. GLOCK does not warrant or represent that this product is compatible with GLOCK pistols.