Installed easily once the original sight was removed. It shot at least 6" low at 25 yd. using Samson front sight and Troy Ind. rear BUIS. Sight post bottomed out on sight. Called Samson and they sent me a different sight post(shorter threads) and plunger. On target at 100yd now.
Pros: Went on easy
Cons: Shot 6" low at 25yd, run out adjustment.
This review was written in the old system and had content requirements that are different than reviews written today.