Introducing the NEW Glock 10-Round (9mm) Magazine that will be the perfect spare magazine for your Glock 43 or Full Conceal M3S pistol. - Purpose - This magazine is exactly the same as the M3S 10-round magazine except it does not have the 'Batman Ears' on the base plate that helps retain the folded grip on the M3S. This magazine is intended as a spare magazine to the M3S or for a factory Glock 43 pistol.