HFC Gas Drum Magazine for Marui M9 GBB Pistol (Black) Bearing Gearbox Advanced Magazine Feeding System

Advanced Magazine Feeding System

GM1-31)  2

and the Open version goes even further in terms of length and adds a top rail for a C-More sight

Ghost Ring rear aperture sight uses the eye's natural ability to center objects in a circle to aid in fast target acquisition

HFC Gas Drum Magazine for Marui M9 GBB Pistol (Black) Bearing Gearbox Advanced Magazine Feeding SystemSpecification: B Power Source : Green Gas or HPA B Material : Metal B Dimensions : 105 x 22 x85 mm B Weight : 900g B Magazine Capacity : 145 rounds B Gas Refill : 25 seconds B Shots Per Gas Refill : 130 rounds B Recommend BB : 6mm 0. 2g B Come With : 500 Shots Square Bottle