Posted: 8/9/2013 2:50:17 PM EDT
| Please help me understand the difference in "pin" sizes. I've read that some sizes are .170 then I read about .154 being standard and better. I'm lost on pin sizes. And how can I tell the size of theses pins? Can you see the difference with the naked eye? |
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If you're going to buy a new or newer Colt AR model made after mid 2009, they mostly have the small military standard size 0.154" fire control pins.
From the first AR model SP1 in 1964 up to about late 1980s to early 90s Colt AR models have the small 0.154" pins, from late 80s and early 90s they changed it to large size 0.170" up to the mid 2009. So it depends when the Colt AR was made, the value of the firearm doesn't go up or down because of the size of the fire control pins, the smaller pins are just more desirable to most buyers. |