The U-Sentry is a Tier 3 ship in the U-Series mod. It has two cannons at the from which fire one pulse each rapidly. This gives it high recoil and allows it to escape easily, similar to the vanilla ship, the Shadow X-3. The agility is miserable un-maxed and is still quite bad maxed, however the ship can deal a great amount of damage from range, and is actually quite excellent against Tier 7's if used properly. However, this has the same health as a standard U sniper, so be careful when using this glass cannon. Despite it's appearance, it does not shoot 6 bullets at once, just shoots two very rapidly. When used properly, a couple U-Sentrys can kill an entire team and destroy their base early in the game.
The H-Warrior does more damage and has lasers behind it to help it escape, but it does not fire as many shots as the U-Sentry and cannot reach the U-Siege.