I had another question, sort of technical this time. I was wondering how you remove that "J" spring from the standard AR-15 hammer. I ask because I want to be able to use the slightly oversized JP "anti-walk" pins in both the trigger and the hammer, but so far I am forced to use the JP speed hammer because it doesn't come with the spring. As far as I can tell, the only purpose of the spring is pin retention, which is of course not an issue if you're using anti-walk pins in the first place. Thanks in advance for any help.