well im thinking about getting an 870 expressfor duck hunting. the gun store i plan on buying from has them for $339.99. they have a sale that give me 10% off so that would make it $305.99. then he said i also get a $30 mail in rebate that would put it $275.99. is this a good deal? it is the black synthetic. would that be okay for duck hunting or do i need a camo gun?