Good product yet needs fitment to function safely and properly. There are no instructions on correct installation procedures.

Some like safeties frame mounted/slide mounted/trigger mounted, some do not. Sometimes you have no choice. I prefer SA over DA/DAO and do shoot them. But with SA I believe all such pistols require a dependable safety and having ambi-safeties gives you this added advantage over being single sided allowing left-handed use. Easy install.