SBGW 73 Trigger spring
Using the Shotgun Boogie Trigger Spring for your Uberti 1873 will reduce the trigger pull.
Boogie Hints: Boogie recommends using a Dremel drill with a diamond bit to grind a small slot at the tab of the sear, (to prevent the spring sliding right or left side off the sear).
Only 1 spring and 1 washer is required and Trigger Spring can be bent for adjustment.
*While this part is easily installed, it is not drop-in ready and requires fitting by a competent Gunsmith.