Manufactured in Austria by Glock.  Genuine Factory Glock 9 round magazine for Glock 27 in .40 S&W.  These will fit your 40S&W subcompact pistol build with our 80 percent frame.  We only sell what we trust.  The smooth and reliable feeding from the Glock mags make it easy for us to choose them as part of our complete subcompact 40S&W build kit.  Manufactured in Austria by Glock.