New build trigger

[akbama]

Will an original Colt Post ban HBAR trigger work in a new stripped lower? I replaced my original trigger with a Jewel and trying to save $. Thanks for replies.

[gwp]

from: http://geissele.com/colt-rifle-users-guide/

Colt is the only AR-15 rifle manufacturer to use both small and large diameter pins in their trigger groups. Most Colt AR-15 rifles manufactured before 1991 and after fall 2009 are probably small pins while rifles manufactured between 1991 and fall 2009 are probably large pins.

[akbama]

Thank you