There are a few categories I guess:
Screw-In : these screw right into a standard
asa on any paintball marker.
Standalone/Cradle : these can be mounted
to the marker with some kind of adapther
that is mounted to the marker itself. The
Centerflag 201 Hyperflow is a good example.
It requires either a kapp style cradle or the
sleeve cradle that has a dovetail.
Dovetail / Rail Mount : This category includes
the Conquest and others. They all have the
standard female rail adapter built into/onto
the reg or bottle. These can be attached to the
marker w/ any of the dropforwards that have
the standard male rail. (i.e. shockteck,
kapp rhino, cp flame, etc)
The screw-in systems generally are on
whenever they are attached. The others
vary. On some models you have to dial the
pressure down until it is at zero, then you
can degass your marker. On others there
is an on/off built in. (centerflag, smartparts,
What are you looking to use this on / or for?