NEW UPDATED 2021 VERSION HAS ARRIVED M4A1 GEN8 may have BP
Hop-up is the back-spin put on the gel balls to increase their range via the Magnus effect. A Hop-up puts backspin on the gel balls reducing the air pressure on its top side.
# M4A1 2020 Hopup works amazing.
# Also tested to work well with spring upgrades of 1.2mm and 1.3mm
We have done all the hard work and spent a lot of money in research for you and these parts that I am now selling are the best and will be the right type of upgrade that will give you the best benefits. These parts are limited so first in first served.
YOU ARE BUYING :
--Use with 7-8mm balls
# M4A1 2018 latest HopUp upgrade
I can't stress enough how much of a difference this thing makes.
# Increase distance and accuracy A LOT!
# Forces the balls to back spin.
# Eliminates bullet arc.
☠These give such a great advantage it's literally unfair for anyone else without one☠