Acquired Century Sporter from an SOT who did a horrible kitchen job on the conversion. Used what looks like a hand Dremel on the entire thing. They removed too much metal and the bolt bounces when in battery. Near selector and rate reducer, done horribly. Needs labor to be functional if one can help.
Same LPK and sear as M16. No mod on bolt. The smith made a Slight mod on the upper to allow the sear to move. Small cut I believe. If you need pics PM me.