1994 Cobra Sierra 30RK, 1994 Sierra 30RK Just in on trade is this 1994 Sierra 30RK by Cobra RV. This unit sleeps up to 6, has one slide, and an easy access spare tire. The kitchen features a microwave, 2 bowl sink, 2 door refrigerator, and 4 burner stove with oven. This unit is sold AS IS. Stop by the lot Today and take this one home! 1-800-246-5497