Was easy to install. Well made- has a super small, precision ball bearing on the end that contacts the trigger plate. Polished all around.
Not the same geometry as original. Zero instructions. Requires sear lug height adjustment. To adjust, remove bolt. Insert a 1/8" hex wrench thru the small hole in the sight rail until the wrench is seated in the lug. Rotate approx. 1/2 turn counter clockwise.
Provides minimal improvement. Replaces a short, crisp trigger pull with one that's long and "mushier". May not last longer- the lug end of this replacement sear is the same as the original.