Creedmoor Sports Single Portable Air Gun Range Take your training on the road with the Creedmoor Portable Air Gun Range. Each target box is reinforced with an impact plate made of 10-gauge steel with a Brinnel Hardness rating of no less than 400 and has grooved slots behind the target face for cardboard to create a secondary pellet containment chamber. The Portable Air Gun Range comes with a durable curtain/ backstop with strong stopping power and breaks down quickly and easily with the use of a wrench. The dimensions of the curtains are 30" x 84" Click Here for Instructions