Shocker RSX/XLS Drop Rail Kit NiMH Batteries this means it is already

this means it is already set to correct fill pressure for many PCP reservoirs already on the market

Shell color and fill are random

then release the side button

Extended Battery Life Simple Push Button Selection to Change Firing Modes Reprogrammable Selector Switch (Position 1 AND 2

Shocker RSX/XLS Drop Rail Kit NiMH Batteries this means it is alreadyThe drop back rail for the Shocker RSX or XLS pushes the air source adapter (ASA) back toward the player. The rail also lowers the ASA approximately 1 2 inch which raises the marker slightly in the sight picture of the player. This repositioning helps players that have longer arms, are taller or just like a longer marker to feel more comfortable with the nimble Shocker RSX or XLS.