ETR/EGO T-RAIL **NEW FOR 2008** The ETR rail is specifically designed to work with the planet’s best Tournament level paintball marker, the Planet Eclipse EGO. It allows you to adjust the length of your EGO to a more comfortable length. With the introduction of smaller and lighter regulators and smaller bottles, the ETR allows you compensate your markers feel and length. Serious players know that having your gun setup too short can make running and shooting next to impossible. Enter the ETR, from Paintball AssassinTM.