BT ERC Features: *Slide Away feedport for easy cleaning and maintenance. *Lightweight balanced construction *Impact resistant backed on coating *Works with CO2 or compressed air *BT Electronic Grip Frame *Custom two finger trigger *Semi auto *2 ramp modes *2 full auto modes *Powered BT Rip Clip *Sound activated *Force feed *Holds over 200 paintballs Gold Package Features *20 oz Tank *JT Radar or PMI X ray Anti Fog Mask *6 1 Deluxe Paintball Harness *6 Zephyrpaintball 140 round pods (color may vary) *Premium 1 oz Maddog Drool Gun Oil *Maddog Designz Jerk Squeegee *Zephyr Paintball Barrel Condom *Premium Spring Loaded Ammo Hopper 200ct