The need for additional small arms combined with a complete lack of spare industrial capacity led the British government to contract with two U.S. commercial arms manufacturers, Winchester, Remington and Eddystone (a subsidiary of Remington set up principally to manufacture the P14) to produce the P14 for the British before the US entered the war in 1917. However, each factory produced parts from their own designs, leading to interchangability issues; Winchester was particularly troublesome in this regard, going so far as to refuse for months to change to the new Mk I* standard.