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7/5/2011 1:17:13 PM EDT
What is the difference between large pin triggers and small pin triggers?
7/5/2011 1:27:12 PM EDT
[#1]
Large pin were used by Colt for a short time. I believe they measure .170  small pins are the standard and I believe they measure .154.

Or I may have it wrong, it might be .174 and .150
7/5/2011 1:32:28 PM EDT
[#2]
For a while the semi-auto Colts used larger diameter pins for the trigger and hammer, to prevent installation of full auto capable parts.

If you have a Colt with those larger diameter pins and want to replace the hammer, trigger, disconnector etc, you need parts made for the larger diameter pins.  Other Colts and all non-Colts use the standard, small diameter pins.
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