Timney (AR15)Trigger

[264charlie]

Hello,

I am building my first AR-15... Currently ordering all the parts.

I am stuck on the trigger. Timney sells two pin sizes large and small. Witch one do I need?

Thank you for your help.

[aplinker]

Large pins are for Colt lowers.

All mil-spec lowers use small pins.

[264charlie]

Thank you for your help.