Elvish Tac R-Hopped ZCI 6.02 Tightbore Barrel Modify Flat-Hop Bucking ZCI CNC Hopup S-Nub AEG R-Hop RHop (363)

["Package includes: 1, Professionally R-Hopped ZCI 6.02mm Tightbore Barrel. 2, ZCI Rotary CNC Hop-Up Chamber for M4/M16 Style Airsoft AEG. 3, An extra R-Hop. 4, Modify Flat Hopup Bucking for Airsoft AEGs (Hard Type). 5, S-Nub for ZCI Hopup.","R-Hop is the single most important part in airsoft that extends your effective range to over 60m/200ft. Max range of 90m/300ft can be achieved (with M130 spring, 1.7J).","This ZCI 6.02 TBB is already professionally R-Hopped. R-Hopping Steps: 1 Thoroughly cleaning using ethanol alcohol. 2 Professional gluing. 3 Visual and “push from inside” inspection of the R-Hop.","12 Lengths to choose from: 229mm, 247, 275 300, 340, 363, 380, 407, 430, 455, 509, & 550mm. R-Hop works best with 300-509mm. 550mm requires large air volume to push and is suitable for HPA. 229-275mm cannot take full advantage of the R-Hop.","ZCI Rotary CNC Hop-Up Chamber works well with the R-Hopped ZCI TBB. The sweet point is between 180-270 degrees. You can over-hop heavy BBs using 270-360 degrees."]