fianlly got a real SP1 after looking for years and building a fake. It looks painfully original exept -did they originally have a chrome bolt? Next question is what is an early SP1 worth? 4 digit serial 21XX, that puts it in 1964 doesnt it? I have never seen this early before, I notice a strange buffer, abnormal safety selector, correct smooth sided carrier and other odd things I have not seen before. Any history lessons out there from our experts? When did this stuff change?

SP1 data base:

ar15.com/forums/topic.html?b=3&f=118&t=264305

Nice database, shouldnt it be tacked? So what is it worth?

Depending on condition, I would say $1,750.