NO. Tippmann 98 has its own unique threading
Any barrel that is Spyder threaded.
Tippmann also makes the US Army Alpha series, so they are equal........ But the MR1 is not as widely respected at the Tippmanns are, most of that is due to the tough and durable nature of the Tippmann.
The salvo has more accessories and has a better feed neck and stock then the Mr1.
No it does not the mounting systems are close but not the same
Tippmann 98's, spyder mr1/victor, and azodin ats/kaos are good to start.
It is really too close to call. Both are entry level woodsball oriented markers. If you want more durability, get the carver, but if you want to play with a stock, get the Mr1. Since they will both perform the same, just find out which one "feels" better in your hands.
The only difference is the weight, and shape. If you want a more militarily style look and better customization, go with eh Bt4. If you prefer spyder style markers, and not having to buy a stock, go with the Mr1.
There are several paintball guns that are cheap and meet basic functions, none of them are "good." tippmann 98, azodin kaos, spyder mr1, are some of these markers.
about 230 fps
No, it is mechanical. The EMR1 is electric.