difficult thing to do however most tuners are better with getting them to run on air. Is there a reason that you chose the M'rod as opposed to say the Disco? The reason that I ask is that the Disco can be made to work very well as dedicated bulk fill co2 and probably easy enough for you to do it without sending it out. Either of those guns tuned to run on co2 will have a high shot count per fill.
JK's Airgun Forums, moderators, and administrators are not responsible for any problems that may occur from reading or using content posted on this forum, as they are the exclusive responsibility of two parties: the person who posted it and the person who acted on said posted information.Use of our forums from people under 18 years old, only with legal guardian(s) present.