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AR15.COM
2/27/2011 1:42:17 PM EDT
I picked up a Star PD and decided to change all the springs and replace the buffer.

It was a major PITA removing the rear sight to access the pin with retains the firing pin but I managed.

I also replaced the extractor spring, magazine latch spring,rear sight spring,safety spring and slide stop spring.

I failed miserably when it came to the hammer mainspring. I tried for over an hour with no success so I reinstalled the old spring as I could not compress the new spring enough to install the hammer.

Any one have any tips?