Hello
@Bupyc and Welcome to the Forum, now first of all where are you ? you haven`t put it in your square to the left of the screen, this will help you and others to direct / buy / sell, as they could be around the corner to you,
as for a gun, for which will you be using it for ? they all shoot Paintballs !! but some shoot a more Brittle paintball than others, the older guns which normally come up for sale will probably hit the balls harder ( this is not power ) as the paintballs used in the woods are slightly harder on the shell to get through all that Bramble ect, the Brittle Paint is used in Tourneys for an instant kill, so much so that the paint can be dropped NOT Thrown, from about x 2 feet on a hard surface and it will break, in the woods using field paint, you can throw them hard at things and still not break them !!
this refects onto the Gun you want, Older guns will smash the balls going to what we call SOUP before they even leave the barrel, Newer guns are designed to hit the ball Softer but still giving the distance,
my advice is to do a bit of homework first on the guns wanted, plenty vids showing this on U-Tube, how about you giving a call to the above = top of the page , Say Just Paintball , ask what guns they have second hand , write them down , then look on U-Tube to see how they fare /
If you can`t afford Top End guns like :- Bob Longs / Planet / Dye / Lux
then there`s plenty of them going second hand,
Just be careful and Don`t just buy the first gun that grabs your attention,
always ask yourself .. Why are they selling ??