You will have to contact the maker to find out.
No it depends, you need to check the rail size of your rifle, then the sort of rail that the scope can attach to. These are some standard airsoft scopes, check your gun rail size first though!
34 inches.
Most airsoft RIS rails are the same size. it is safe to assume that an optic, light or otherwise will fit on any Weaver, Picitanny, or 20mm rail.
weaver refers to the type of scope mounts the scope uses. a weaver scope can mount on any rail size.
you can, but it depends on the airgun. Most spring airguns but two-directional shock on rifle scopes and can wreck them. You can usually get airgun scopes for pretty cheap though. Mostly though, it depends on the gun and the scope.
No, The battery size determines the Rate of Fire or how fast it shoots. The fps is determined by the spring.
No.
6mm
If there's varying sizes of airsoft pellets, then each size will only work for airsoft guns intended to take that size pellet. Others will be either too small or too large, and could end up damaging your airsoft gun, or even getting stuck in the barrel.
In order to mount anything to your gun, you will need one with a mounting rail. Common mounting rails are the Piccanty and Weaver rails, also know as RIS and RAS. If your gun as a 20mm rail of either kind, you have to attach the grenade launcher and tighten the included screw so it doesn't fall off. If your gun does have a mounting rail, the easiest way to find if it is the right size would be to find your gun at an online store, such as amazon, airsplat, or pyramid air, then check the specifications.
BB's for air guns (NOT airsoft) only come in one size .175 commonly referred to as .177 caliber. If you want to know about airsoft BB's then you need to put the question in the "Airsoft category."