MAXX CNC Aluminum Hopup Chamber M4i - PRO color-black-red Highlighted featuresMade from High Strength

Highlighted featuresMade from High Strength Spring SteelHard Coating Prevents CorrosionProvide 120% / 140% power on different tension zoneShorten length with harder coilImprove cycling efficiencyFully compression by shorten spring lengthCycling enhancement through 2 different tensioned zones

56/M4 Magazines

Visible Laser Class                            IIIA

Can only be shipped by UPS Standard

MAXX CNC Aluminum Hopup Chamber M4i - PRO color-black-red Highlighted featuresMade from High StrengthCNC Aluminum Hopup Chamber M4i Pro (with BB Latching System) unit is precisely machined to perform accurately and consistently on ICS CXP CS4 EBB (include old models) M4 M16 AEG series. The Hopup Chamber M4i unit is built with an aluminum Rotary Dial Knob for fine hopup adjustments, the precision Hopup Lever and 4mm Bucking Nubs (6mm Bucking Nubs are optional) to perform best with R Hop and Standard Hop to keep the BB shooting accurately and