Were any of the T's available from the factory independant of the others? I always see 3T's but do 1T or 2T exist? I am guessing you could get target stocks without the wider target hammer and trigger and some guns were only available with target stocks (versus magna and target) but had narrow hammer and trigger. Was a target trigger or hammer available without the other or with magna stocks? I am speaking specifically about K and N frame guns. Thanks.