You can find them in Greece: Tomb of Tihocan or you will get them after beating Pierre in the same level.
A hadgun that fires a .5" projectile
Yes, it is.
fifty dollars
Fifty caliber, but it is more of a toy than a paintball gun.
100-10000 USD depending on specifics
If you mean legally, yes, in most states in the U.S. a person can own any caliber rifle that is available. I believe there are 1 or 2 states that have state laws restricting caliber.
Yes. The .50 caliber machine gun was developed for use on armored vehicles. A lighter version was designed for use in aircraft.
100-300 USD
There are in excess of 12 billion firearms in the world, not counting military weapons larger than fifty caliber.
A few hundred to a few thousand depending on EXACT configuration, condition, box, papers, accessories.
They are worth about $4000 USD if it is one of the fifty engraved by Neil Hartliep. There is one for sale from Cherry's of North Caroina for $3,995. There are very few for sale.
The word 'fifty-fifty' is a compound adjective and adverb.The adjective 'fifty-fifty' describes a noun as shared equally.Example: The agreement was a fifty-fifty share of the profit.The adverb 'fifty-fifty' modifies a verb, an adjective, or an another adverb as equally.Example: The votes were split fifty-fifty.