no, the rocking trigger was for spyder markers only
There is no reason to put a paintball gun in a refrigerator, or any appliance for that mater.
On the bolt cap there is a small twistable screw. Put an Allen wrench in there and it will go up or down. NOt sure witch way does what though.
No. You need an offset rail or the sight will be blocked by the hopper.
You cannot replace the trigger buy itself but you can buy a new trigger with new trigger frame like in the related links:
Have a degree in chemistry. Do not put anything in your gun besides air-tool lubricant (for mechanical guns), or actual paintball lube.
The Spyder MR-1 was designed to be upgraded. You can add a new feedneck, barrel, On/Off ASA, stock, and trigger. However, it has been years sense its release therefore aftermarket upgrades will be few and hard to find.
you screw the adapter into the gun, and then the co2 cartridge.
it depends on the model.
most likely a valve oring in damaged.
You can use co2 tanks if they are the anti-syphon tanks or if you put that on your tank put even then they are not recommended.
You can put a folding stock on all airsoft guns.