Here we have the second of two magazine extension projects from FFFTech, the first being the +2 DMG model. This +16 model, as the name implies, increases the magazine capacity of any OEM Gen 3 or 4 Glock magazine by a whopping 16 rounds! In this way one can turn a standard capacity Glock magazine into an extended standard capacity 33 rounder.
In addition to an OEM Glock Gen 3 / 4 magazine, this project requires a 33 round extended length magazine spring and a few screws for project assembly. The project was designed and tested with Wolff brand springs, but theoretically others should work as well.
This design features a recessed front face to aid in gripping the magazine. The print comes in two parts: the main extension body and a rear plate which is screwed on after the main extension body is installed on the magazine.