No one makes a better, more reliable trigger group than Geissele
This is the same trigger we chose for the OBR. We consider the SSA one of the best 2-stage triggers on the market. The SSA is a non-adjustable, drop in trigger that takes only a few minutes to install. (It simply replaces your stock trigger). Geissele triggers are extremely durable, battle-proven, and are perhaps the best upgrade to any precision setup.

Specifications:

Semi Auto

Small Pin .154

Comes complete with trigger group pins

Clean, consistent trigger break

The Geissele SSA has a pull weight of about 4.5 lb. 2.5lbs on the first stage and 2 lb. on the second stage.