No, the majority of paintball parts will only fit the type or series of markers they were designed for. This being said most series have some interchangeable parts, like the Tippmann 98, A5 and X7 all use the same guide rail, main spring, detents, front bolt, trigger pins and sear. Between the majority of paintball guns, the ASA, Regulators and macro lines are able to be switched with one another.
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There are a few places where someone could purchase a Smart Parts Ion paintball gun. A store like Sears, and websites such as trademygun, and ultimatepaintball, all sell Smart Parts Ion paintball guns.
The paintball gun does not use any parts that have not been make in other industries before.
No one has a patent on the "paintball gun" several companies have patents on their valves and other parts, but no one company can paten "paintball guns"
The same as every other paintball gun, louder then an airsoft gun, softer then a pellet gun.
All paintball markers are chronographed to the same velocity of around 290-300 FPS.
All paintball markers must be chronographed at under 300 FPS, so all markers have the same "power."
about the same as anyone else.
If your gun attachments are for a rail, and your paintball gun has the same size rail, then yes. Instances of this are red dot sights, flashlights, under-mounts, and lasers. Suppressors, barrels, and proprietary parts usually will not fit without modification.
All paintball gun shoot around the same distance. which is about 100 yards at a 45 degree angle, but around 50 when actually shooting.
A paintball gun needs CO2 (or HPA) to fire at all.
Yes. A paintball gun is not considered a firearm therefore a felon can purchase a paintball gun in Texas.