Terms of the agreement between the two closely held companies were not disclosed. U.S. Repeating manufactures the Winchester rifle. The combined company, with annual revenue of $80 million, will be one of the nation's largest sporting-arms manufacturers. Both firms are among the nation's oldest rifle and shotgun makers and were acquired by a small group of investors from larger conglomerates within the past five years. The merger is expected to be completed within the next few weeks.