.68 caliber. the paintball standard.
You can purchase a Spyder Paintball gun directly from the Spyder Paintball website. There are also options for new or used Paintball guns on eBay. There is a wide variety to choose from.
An eframe trigger is only an accessory, the fenix is a functioning gun.
Disassemble the gun, and replace the back cap with the stock or take it to a paintball store, and ask them to.
A paintball gun
best is a matter of opinion but by a large margin the spyder fenix or azodin blitz are currently the lowest priced markes ($150) that have the most features on them
Fifty caliber, but it is more of a toy than a paintball gun.
They are listed as "spyder" threads. It shares them with piranhas and several spyder clones
as long as it is spyder threaded yes
It is the standard .68 caliber
Spyder MR100 Pro is the RIS Quad rail system that fits the Spyder MR1 paintball gun.
There is no "ak-47" paintball gun. there are many companies that make guns that are styled after the Kalashnikov series rifles. On the same note, Spyder makes several models of paintball guns, which vary from beginner "wallmart guns" to decent enough middle classed markers.