Yes. It has a double trigger to shoot faster, by using both fingers in a rocking motion.
No, you can not fit a double trigger in any of the US Army tippmanns.
A double trigger firing system is where the trigger has grooves for two fingers rather than one. Usually found on tournament or "speedball" markers as opposed to singe trigger "woodsball" markers. To use to its full potential you use a fluttering motion with your index and middle fingers. This can increases rate of fire by more than three times if used correctly. The best Double triggers are for electric markers that have a return system (a magnet for example) and are adjustable (pre and post travel, activation point) Some markers have a double trigger purely for looks and is too insensitive to be used properly (ie most Tippmann and mechanical no MR series Spyder double triggers).
Do you mean the MR1 or the EMR1? Both of them are spyders entry level woodsball gun, with built in stock and double trigger. The emr1 has an electric trigger, which allows it to fire faster and with different modes, where the mr1 does not.
Buy better paint, and get a barrel that fits the paint well. Also clean your gun often.
Triggers for Xball, speedball and airball are known simply as triggers. Most are "double triggers" which are large enough to be operated with two fingers. They are also known by the different styles of trigger geometry like "rake" "blade" "sling" and "stick." They also can be called by their operation type like "magnet" "spring" and "electric." Any combination of the types can be used to describe the trigger depending on how much detail you want to give.
Yes, just simply buy a double trigger and double trigger guard, open up your marker, remove and replace the old trigger and trigger guard.
double trigger and hammers
Yes, and in fact there is an E-trigger addition that comes with a double trigger.
The second trigger is usually a "set" trigger, that spring loads the forward trigger and makes it into a hair draw trigger.
It means alternate between front post double crochet and back post double crochet.
i'd have to say the flatline barrel but it is your money so what ever you want if you want to shoot faster than go with a respons trigger and double trigger if you want to be fore shore that every time you pule the trigger that a paintball is going to come out get a cyclone feed or if you want to shoot farther and more acurat go with the flatline barrel go with the quick thread if you do