This is an original factory replacement part. OEM Glock factory replacement parts are manufactured to the exact same specifications and tolerances and use the same manufacturing materials as the original parts which guarantees excellent fit and reliable operation.
GLOCK Magazine Spring; G17, G18, G22, G31, G34, G35, G37
G17, G18, G34: 19-rd mags only (17-rd mag with 7151 floorplate & 7165 insert)
G22, G31, G35, G37 11-coil spring
Models: G17, G17L, G18, G22, G31, G34, G35, G37 (including Gen4)
These are NOT Gen 5 replacement springs.
Additionally, if you have a light on your GLOCK and are experiencing feeding problems, this spring is recommended.
This is the extra power spring for 17 round, G17 (9mm) mags with the GLOCK +2 on them.
Needing more Glock goodness in your life?