No 4 extractor spring question?

[Brian Dick]

I've got some coachwood front handguards but no rear ones. Send me your bolt head and I'll install the correct nos spring for you at no extra charge. Email me for details.

[HOOKED ON HISTORY]

The experts were correct. Upon examination of the Numrich part alongside an original there are significant diffrences. The detent on the Numrich part appears to be a ball bearing inset into the spring as opposed the originals stamped or punched detent with a much smalled OD which snaps easily into the recess hole in the bolt head. The Numrich spring is much thicker and heavier as well.