HK Army LAZR Barrel Kit AC 15" Dust Gold Color Inserts Eclipse Barrel Back the exceptionally tough composite external while providing a custom the exceptionally tough composite external construction with aircraft grade aluminum interior will take everything that even the roughest and most demanding player can throw at it 685)+ NEW BLE (Bluetooth® Low Energy) compatibility (optional)+ NEW Tool less eye covers+ NEW Cure FT bolt+ NEW Larger valve chamber and lower operating pressure+ NEW Semi rigid carry case+ NEW Low rise adjustable clamping feed neck with lever locator+ NEW Spare onboard detents+ NEW 2 year manufacturer Warranty+ User serviceable SMC solenoid+ Dual SFR (flow controls) bolt speed control adjustment+ SFR adjustment tool+ USB E Portal compatibility+ Stacked tube poppet+ Lever Valve operation+ Zick3 Rammer assembly Heavy and lightweight rammers included+ 115psi operating pressure+ 9V battery powered+ Blade trigger (compatible with 170R CS1 GEO4 trigger shoes)+ 5 point trigger adjustability+ Spring and magnetic trigger return mechanisms+ Micro switch trigger sensor+ POPS ASA+ Deftek offset feed system This attention to surface detail will deliver you the ball on ball accuracy you are looking for in a high end barrel system 8" Barrel Back