This is a factory original, drop-free magazine for your Glock. This GLOCK G21 Magazine is a standard factory replacement magazine. This 45ACP magazine holds 10 rounds, is made of polymer, and comes in a black finish.
Glock magazines have a hardened steel insert encased in high tech polymer. This polymer coating protects the magazine and prevents deformation, even when dropped from a great height.
Specifications and Features:
Fits: All Glock 45ACP caliber models. ( will not fit flush on compact models but will function)
NOTE: All current production Glock magazines are also compatible with all previous generations of Glock pistols.