Convertible Ambi Features Both 57Adeg & 90Adeg Lever Throw Options Allows Customer To Choose Between A Short Or Standard Throw Compatible With Both Ar-15 & Ar-10 Style Rifles (Semi-Auto) Corrosion Resistant Levers & Core Includes 4/40X1/4 Grade 5 Titanium Torx Socket Head Screws, Mil- Spec Safety Detent & Spring. (Black Ti Selector Ships W/ Black Steel Screws.) 100% Lifetime Warranty Made In The United States Of America Weighs Approx. 11.77 Grams Core: Constructed From Grade 5 Heat Treated, Hardened Titanium Coated Black With Ion Bond Finish Lever: Constructed Fr Mfg: V Seven Weapon Systems