The Battle Arms Development Steel Ambi Firearm Safety Selector are detachable and interchangeable for use with either the left or the right hand for maximum flexibility and versatility. These AR15 Safety Selectors by Battle Arms Development are CNC machined from bar stock steel for precision and are durable for a lifetime of use. Choose the Battle Arms BAD-ASS Ambidextrous Safety Selector for the south paw and ambidextrous shooter! Specifications for Battle Arms Development Ambidextrous Safety Selector: Manufacturer: Battle Arms Development Color: Black Gun Model: Smith & Wesson M&P 15-22 Fabric/Material: Steel Gun Type: Rifle Condition: New Last Chance: Yes Features of Battle Arms Development Ambidextrous Safety Selector Modular Assembly Ambidextrous Controls Reversible 0- 60 or 0- 90 Option Ergonomic Lever Design for Positive Purchase Limited Lifetime Warranty Against Manufacturing Defects Dovetail Attachment Engineered for Ultimate Strength and Reliability Patent Pending Internal Locking Mechanism Eliminates Broken Screws Swiss CNC Machined Center for Ultimate Precision and Butter Smooth Operation Compatible with All Known AR Variant Triggers(1) (i.e. Hiperfire, Geissele, CMC, Timney, etc.) Compatible with Smith and Wesson M&P 15-22 Firearms. Package Contents: Battle Arms Development Ambidextrous Safety Selector