If you're selling a mechanical marker, it needs to be posted in the mechanical marker forum.
Are you bumping your thread?
You will want to state what the link in your sig is for. You can copy and paste the info below and add it to your sig. It will automatically make it a clickable link.
[url="http://www.pbnation.com/showthread.php?t=3374737"]Digital camo BT4 Assault with E-trigger and Rip Clip[/url]
Which will look like this...
Digital camo BT4 Assault with E-trigger and Rip Clip