"Browning" The best there is for extreme hunting
"Systema" is by far the best airsoft gun brand out there.
smith and wesson
The Current best are Well, Tokyo Mauri, and Airsoft
Barska brand gun safes are the best rated ones on the market. They are very strong and affordable to purchase.
UTG is a pretty nice brand the best gun has to be UTG L96 artic warfare gun This is seen with professionals but might not be the cheapest so go for what is cheaper but whatever you buy get EXTRA MAGAZINES. Hope this helps
Tippmann is the best brand too get. Spyder is another good brand that isn't as good of a gun but Tippmann's are a bit more expensive but there is really no difficulty with Tippmanns at all. Invert mini is the most expensive gun around these days ( 500$ ) or the Bob Long guns.
Your best source of gun values is Fjestad's "Blue Book of Gun Values". You can usually find a copy at larger libraries.
For an actual scope, and not a reflex sight, I tend to favour Nikon, personally, and it's what I recommend to my customers.
Gun shop, gun show,.
Yes
is it remington?
If you have questions about you gun it is best to let a licensed gunsmith or firearms dealer look at your gun to see if he knows about it. The most important thing you can do though is to find out what brand it is, without that information it is next to impossible to find out about your gun.