canjar made a set trigger, way back when but i think that was the only game in town. i had one but traded it but can say that canjar will be of no help to you these days. for the swivels, contact Gary Chatham, in texas. he bought out all remaining b78 parts from browning. i dont have his number right now but i'll get it when i get home. its on the browning website though under parts for obsilete firearms