The revolutionary Anti Chop System ACS is the world's first true anti chop bolt. Simple and affordable, the ACS bolt delivers the same results as expensive markers with eyes. The ACS precision spring tension recognizes obstructions before crushing balls and jamming the marker, so the action never stops. Features Second generation CAMD Color Access Display Mode Sensi tough straight trigger with multi adjustment points for enhanced rapid firing ACS Venturi bolt Reactive response trigger, capable of up to 20 shots per second Sleek, custom designed receiver Special ACS edition body engraving Tournament lock switch 12' aluminum stock barrel Anti double feed Expansion chamber with foregrip Tournament velocity adjuster Vertical ball feed New style drop forward New two finger trigger with regulation trigger guard Adjustable trigger pull Low pressure chamber Bottom Line with stainless steel hose Top cocking bolt External recharge port Quick disconnect pin Adjustable r