Baer Extended Ambidextrous Safety
A perfect choice for any 1911 because it's contoured to match the natural bend in your thumb. This serrated safety is a must for lefthanders or for weak-hand shooting. It can also be contoured for tactical use.
Rock Island 1911 FS A1. Unfortunately I wasted $73 purchasing this product to learn that it does not work with the model above. When swinging the lever down the plate edge does not clear the plunger housing. Little salt in the wound I'll be paying 20% restocking for the lack of an accurate description.