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trigger nub
Posted: Thu Apr 15, 2010 12:02 am
by mkIII1022
what is that nub for on the back of the factory trigger
Posted: Thu Apr 15, 2010 6:50 am
by Bullseye
It is there to prevent a partially seated magazine from disabling the gun. The Mark III has a magazine disconnect safety and the new magazines have an additional bump stamped into them on the upper left side. The trigger nub engages that bump and can seat a nearly locked mag by trigger pull leverage action.
R,
Bullseye
Posted: Thu Apr 15, 2010 9:14 am
by blue68f100
If you ever try to seat a full magazine (bolt closed) with the trigger nub, your trigger will act like it's on safety. So you will know if something is wrong when the trigger pull goes from 3# to >50#. It's useless, if you want to use a pre travel adj on the trigger you will need to grind this off. It's not on the MKII or MKI.
Posted: Thu Apr 15, 2010 4:21 pm
by Bullseye
Yes, this nub can interfere with a Mark III pistol with the pretravel modification. That's why the newer Mark III VQ triggers do not include the nub. Grinding it off will work, so will using a Mark II trigger.
R,
Bullseye
Posted: Thu Apr 15, 2010 5:29 pm
by mkIII1022
thanks bullseye and blue. i was wondering what that second nub on the magazine was for. you guys rock