With the Killer Innovations Mag Extension, you've got an extended spring to support the weight of your increasing magazine, which results in a smoother, more accurate reload. Killer Innovations designed these Magazine Extensions with Enhanced Grip Features (E.G.F.) that provide you with better grip and angularity control while feeding the mag into your handgun. The Killer Innovations Velocity Glock Magazine Extension includes their special E.G.F. cuts that provide an aggressive serrated lip with enough surface area to provide a proper grip and reload every time. Also, these mag extensions are designed to last by withstanding drops from 6 feet onto concrete for repeated drops. In fact, one of the ways you can easily clean your mag is with the toolless floorplate removal. Just depress the retaining pin, slide the floorplate out, and you're ready for the next mag change. Equip the Killer Innovations Velocity Mag Extension for Glock 19 for a stronger, more durable extension that will support your ammunition regardless of the situation. Specifications for Killer Innovations Glock 19 Magazine Extension: Manufacturer: Killer Innovations Color: Orange Gun Model: Glock 19 Features of Killer Innovations Glock 19 Magazine Extension NOT COMPATIBLE WITH 10 ROUND MAGS, MAGPUL OR ETS Package Contents: Killer Innovations Glock 19 Magazine Extension Extended Spring