The JP Enterprises Adjustable/Reversible Safety Selector Kit can be used with any standard or aftermarket AR trigger components. These AR15 Safety Selectors from JP Enterprises will decrease your installation time by 1/3 or more. JP Enterprises Adjustable/Reversible Safety Selector Assembly blocks all movement in the "safe" position, protecting your new trigger from damage due to over-fitting. Both right-handed and left-handed shooters will love the added function from the JP Enterprises Adjustable/Reversible Safety Selector Kit 702822. Notice: Replacing any original JP fire control components with non-JP aftermarket components may render the JP adjustable safety nonfunctional by allowing the rifle to fire on safe. For example, some two-stage triggers will not interface with the JP adjustable safety, which will not fully block the trigger in the safe position and allow the trigger to function even with the safety engaged. If you install a non-JP trigger system in the JP adjustable safety, it is imperative to verify its function. Specifications for JP Enterprises Adjustable/Reversible Safety Selector Kit: Manufacturer: JP Enterprises Color: Black Additional Features: Kit Including Extra Low Profile Ambi Lever Features of JP Enterprises Adjustable/Reversible Safety Selector Kit: Adjustable/reversible safety selector One full size and one low profile safety lever Package Contents: JP Enterprises Adjustable/Reversible Safety Selector 702822 Kit One selector drum One full-size safety lever One low profile safety lever Two 8-32 x 3/8" flat head cap screws One 8-32 x 1/4" flat head cap screw One 8-32 x 5/16" dog point set screw One 8-32 x 3/16" alloy set screw One safety detent spring