Armaspec Fulcrum 90 Degree Short Throw Ambidextrous Safety Selector Black. Its easy to reach levers and incredibly smooth action makes position selection a natural fluid movement for the operator while having a super crisp lockup leaving you no doubt about your safety status. Once installed the FULCRUM-90 operates easily from either side of the receiver for intuitive use in the field by a variety of shooters in any circumstance. Pat. Pend. Specifications for Armaspec Fulcrum 90 Degree Short Throw Ambidextrous Safety Selector: Manufacturer: Armaspec Gun Type: Rifle Gun Model: AR-10 AR-15 Hand: Ambidextrous Country of Origin: USA Features of Armaspec Fulcrum 90 Degree Short Throw Ambidextrous Safety Selector Coming Soon Package Contents: Armaspec Fulcrum 90 Degree Short Throw Ambidextrous Safety Selector What firearm models does the manufacturer say Armaspec Fulcrum 90 Degree Short Throw Ambidextrous Safety Selector is compatible with? The manufacturer suggests that Armaspec Fulcrum 90 Degree Short Throw Ambidextrous Safety Selector is compatible with AR-15 AR-10Armaspec ARM211-BLK: Fulcrum 90 Degree Short Throw Ambidextrous Safety Selector Black