View Full Version : Colt pin size
New guy here. Just got my first AR. Its a Colt 6520. Not 100% what I wanted but could not pass on the deal. I want to get a new upper ether a Tactical Upper Half with a flat top or a Varmint Upper Half. I see colt has two pin sizes. What do I need.
New guy here. Just got my first AR. Its a Colt 6520. Not 100% what I wanted but could not pass on the deal. I want to get a new upper ether a Tactical Upper Half with a flat top or a Varmint Upper Half. I see colt has two pin sizes. What do I need.
When was it made? What is the serial number?
Standard pivot and takedown pins.
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