The BT-4 Combat A7 is the marker that started the BT-4 Series. It's the perfect scenario or woods ball marker which allows you to build the perfect one-of-a-kind beast. Fully upgradeable, the Combat is the scenario marker by which others are judged. This reliable and accurate marker is the obvious choice for use in your scenario or woods ball event. The front grip is removable and the military standard dual Picatinny rails accept many tactical upgrades like optics and other accessories like the BT Flashsight. The trigger system can be enhanced with by installing the Double Trigger and Electronic Grip Frame to increase your rate of fire. With available upgrades like the HALOTM powered Rip ClipTM and ApexTM Barrel system, the BT4 Combat is the core of our successful BT4 line of markers. If you are looking to customize your paintball gun, start with the BT4 Combat and open a world of realistically styled marker configurations. Features: Empire Battle Tested Paintball has created a loader that will optimize the performance of our awesome paintball markers. The Empire BT Rip Clip is designed using HALOTM technology for sound-activated force feed loading. Utilizing a microphone for sound sensing, the loader only feeds when it detects the sound of the marker firing. After ceasing to fire the marker, the lack of sound will direct the loader to stop feeding and enter a stand-by mode. The large capacity shell holds over 200 paintballs, plenty to light up the enemy. The Rip Clip will feed over 8000 shots before needing a battery replacement and is designed to fit BT-4 markers . Rip Clips are standard equipment on the Empire Battle Tested ERC and Empire Battle Tested Delta Elite markers, and when mated to the Electronic Grip Frame allows uninterrupted full auto firing. Can you afford not to use the HALO powered Rip Clip? Play against someone else that is and your answer will be a definite No.