This hop-up unit is a collaboration between Umbrella Armory and Maxx Model. No modification of the arm will be required if you choose to install this unit into a r-hopped barrel. The Maxx hop up unit design is superior in feeding high RPS guns compared to other units due to it being pushed forwards more than usual.
We requested the hop-up arm modified to be used specifically for r-hop setups. The nub is completely flat and it is different from the concave nubs that come with the MEs. This is to ensure the nub is placing pressure dead center on the r-hop patch itself. This hop up does not support flat hop only setups. This unit has to be used with r-hopped barrels in conjunction with a flat-hopped bucking because the wheel does not allow the arm to protrude as much as the "ME" models, to prevent damage to the patch. However, this allows the arm to give you a much finer adjustment window to adjust your R-hop perfectly.
Differences with Maxx Model ME
-Non-concaved flat arm
-For use with r-hopped barrels in conjunction with flat-hopped buckings only.
-For use with 21.4mm-21.6mm Air nozzles.
-You may have to shave the front of the tappet plate to achieve perfect air seal especially if your nozzle is too short.
-It is recommend to use buckings with "short" lips. We recommend Madbull and Krytac Buckings.
BB Retention latch prevents multiple BBs from exiting the chamber and can fire them without a magazine in the chamber.
Complete Hop-up unit only.
Inner barrel and bucking not included.