Arex's Rex Zero 1 pistol complies with strict military standards for reliability. It has a hardcoat anodized T7075 aluminum frame with a steel locking block insert. The nitrocarburized slide and cold hammer-forged barrel are made from solid bar stock steel. The Rex Zero 1 has high profile white dot sights, ambidextrous safety, decocker, loaded chamber indicator, full length slide rails, and a large trigger guard for the use of gloves. This Rex Zero 1 model is +P rated. It has a 3.85" barrel, OD green frame with black polymer grips and a black slide. It includes a 15-round magazine.