ˈæftɚɹ ɐ wˈʊdən mˈɑːkʌp pɹədˈuːst baɪ fˈɪʃɚ, ˈɔːɹdnəns ɪn ɐɡɹˈiːmənt wɪð ˈɑːɹmɚd fˈoːɹs bˈoːɹd sˈɛt ˈaʊt θɹˈiː pˈaɪlət mˈɑːdəlz təbi bˈɪlt wɪð dˈɪfɹənt kˌɑːmbᵻnˈeɪʃənz ʌv ˈɑːɹməmənt bˌʌt ˌɪntɚtʃˈeɪndʒəbəl tˈɜːɹɪts.
After a wooden mockup produced by Fisher, Ordnance (in agreement with Armored Force Board) set out three pilot models to be built with different combinations of armament but interchangeable turrets.