The all new Axe Pro is a battle-hardened axe designed for warfare. The mad genius of Empires R&D team took a great marker and tweaked, refined and re-designed it to create the original Axes new badass big brother. The improved ergonomics makes it feel better in your hand and the Redline OLED board gives the Axe Pro a bigger brain. It is easier to maintain due to the updated bolt removal system, accessible Eyes and a reduction of screw sizes that require only 2 hex wrenches for adjustment. The Axe Pro also includes upgrades like: improved waterproofing, compact-relay ASA, new trigger & trigger guard, better clamping feedneck and accurate two-piece Driver XX barrel!Features:Full feature Redline OLED board with joystick navigationNow only 2 hex wrenches needed for all screws on the Axe ProImproved ergonomics in Grip Frame and ForegripRe-designed Grip frame has deep angled comfort designImproved weather-proofing including waterproof gasket around battery doorMore robust foregrip mounting designSimpler push-button in-line bolt removal systemNew smaller, more compact Relay ASAImproved ASA attachment, no more set screwsPolished two piece barrel with standard Bore size .688 improved accuracy & efficiency7.5 Control boreand spiral porting for excellent ball on ball accuracy that is cross compatible with Pipe barrel backsNew trigger design with modular trigger guardTrigger pin removed in favor of screw for easier Trigger maintenanceExternally serviceable Eyes, no longer requiring marker dis-assembly for Eye maintenanceDouble Eye system that is easy to cleanRubber nub-style ball detentsTool-less clamping feedneckIntegrated internal air channel