GBU Custom Series CNC 4.3 Hi-Capa Outer Barrel metal riser The skeleton scope riser is

The skeleton scope riser is a beautiful aesthetic metal riser that fits any 20mm tac rail

Extended Mag Release

- M-Lock Compatibility

Black 35 metal outer barrel for most M4/AR gel blasters

The Shark 7" Metal hand guard is a beautiful addition to your custom blaster build

GBU Custom Series CNC 4.3 Hi-Capa Outer Barrel metal riser The skeleton scope riser isGBU yet again brings you the highest quality 5. 1 Hi Capa outer barrel on the market. Made from 7075 Aluminium, sporting 2 different colour designs and perfect machining. With an inner Diameter of 9. 5mm at the end with a 14mm thread, these outer barrels have been designed for alloy barrels, if installing with a stock pistol with a plastic barrel you may need to dremmel out the front section 1 2mm so the barrel feeds straight through. These outer