The mag is powered by a 9v battery so you do not spend valuable time winding a wheel

Polymer bumper acts as CO2 key

and hardness

Polymer lower frame compatible with regular GTP9 slide assemblies

but also offers storage space in each of the two crane-style tubes within the stock

6mmProShop Competition Style Left-Side Charging Handle for Elite Force GLOCK (Titanium Nitride) JagArms The mag is powered byFeatures Aluminum construction Ultra lightweight Designed to enhance positive slide manipulations in high stress scenarios Replaces back plate of slide Manufacturer: Dynamic Precision Color: Titanium Nitride Specifications: Material: Aluminum Compatibility: Elite Force, UMAREX GLOCK and other GBB Pistols w VFC Blowback System Disclaimer: Please use discretion when installing custom parts as fit and compatibility may vary. Professional installation