Nine Ball Custom Aluminum Alloy Shortened Safety Lever
(Type: Lefty / Black)

"Does what it says. Biggest gripe is fitment which may come down to slight variation in QC.

It fits pretty well, but has a slight tendency to stick in a neutral position between engaged/not engaged where it seems like it's not engaged, but it's actually past the detent and can slip into being engaged with minimal force.

In other words, instead of a really crisp positive click where you clearly hear only one click when changing position:
engaged/not engaged

It's like this:
engaged (positive click)/slightly not engaged (positive click from being engaged, weak click if going from disengaged)/ actually disengaged (sometimes positive, sometimes weak click)

Not a deal breaker, but something to be aware of. It will stay disengaged if you are conscious about it. It's not like it's just loose and re-engaging the safety all the time.

For $40.. You decide. Can probably be fixed with a little bit of fitment, but if you were willing to do more work, you could take the stock safety or a cheaper safety and get it to work better, or just start with a 4.3 (the base TM 4.3 only has right side)