Bighorn Arms receivers for bolt action rifles. Bighorn Arms by Zermatt Arms Inc. (owned by Zermatt Tool) manufactures some of the best bolt action receivers in the USA. They are manufactured more consistently than any other rifle action currently on the market. Produced in Bennet Nebraska using state of the art machining. Zermatt Tool achieved their notoriety by producing high end aerospace parts, and brings that same attention to detail to produce these amazing rifle actions.