Each Glock magazine is constructed with a hardened steel insert encased in high tech polymer to protect the magazine from deformation, even when dropped from a great height. The high-quality spring and follower ensure reliable feeding from the first round fed by a fully compressed spring down to the last shot. Its double cut magazine body also works with a reversed magazine catch on Gen 4 GLOCK pistol models. This factory magazine will fit the GLOCK 17, 17L, 19, 19X, 26, & 34 models chambered in 9mm.
These mags are great to carry as spare mags to give you some extra ammo for defensive situations, and they are great at the range!
New magazines can have stiff springs which may make it difficult to load to full capacity until broken in.