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  #1  
Old 12-08-2012, 6:53 AM
cpatbay cpatbay is offline
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Default Distinguishing trigger and hammer pins?

Which one is the trigger and which is the hammer pin??

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Old 12-08-2012, 7:00 AM
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What firearm?
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Old 12-08-2012, 7:07 AM
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AR.
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Old 12-08-2012, 7:35 AM
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What trigger group? I just finished a build with RRA two stage trigger and both my pins where identical and neither looked like yours.
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Old 12-08-2012, 7:35 AM
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Hammer pin has central groove, Trigger pin has off-set groove.
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Old 12-08-2012, 7:38 AM
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Quote:
Originally Posted by isplice View Post
Hammer pin has central groove, Trigger pin has off-set groove.
Yup.
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Old 12-08-2012, 7:59 AM
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Quote:
Originally Posted by Rider1k View Post
What trigger group? I just finished a build with RRA two stage trigger and both my pins where identical and neither looked like yours.
Because RRA is smart enough to include universal pins.

I like Armalite lpk's for the same reason.

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Old 12-08-2012, 9:17 AM
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I've never seen different pins, they've all been the same on my lpk
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Old 12-08-2012, 9:26 AM
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yea ive never seen those before all ive seen had 2 grooves
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Old 12-08-2012, 4:13 PM
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Quote:
Originally Posted by cpatbay View Post
Which one is the trigger and which is the hammer pin??

left is hammer right is trigger
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Old 12-09-2012, 12:38 PM
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Well, I have seen those pins before, just not in LPK's that use Mil-spec parts. Think about it. Using those two pins would require the military to carry two parts for the lower receiver. Instead, they use one pin that does both jobs. When using the two groove pins, the outer groove isn't needed for the hammer, and the central groove isn't needed for the trigger. Having the extra groove doesn't hurt the function of the pins though.
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Old 12-09-2012, 10:58 PM
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Pin with the central groove will be retained by the J-spring that is in the hammer.

Pin with the groove near the tip of the pin will be retained by one of the long legs of the hammer spring as you are placing the hammer into place.

I've only used DPMS lpk's...they contain two identical pins with both having a central groove and the offset groove near the tip of the pin.
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Old 12-09-2012, 11:09 PM
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if I remember correct,y, mine are the same o.O i'd assume that the hammer one has the groove closer to the end.
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