Advantage Arms Conversion Kit: Convert your 9mm/.40 S&W Glock down to 22LR so trips to the range dont break the bank. Or if you want to teach your kid the fun of shooting but dont want him/her to start on the 9mm" a conversion kit is a great learning / training tool for your collection.Features :Fits Glock 26/27 Gen1-5(2)-15 Round MagazinesIncludes Range BagRecessed Cut for a Variety of Red Dot Options (Not Included)