Mars Trigger Position AR FRT Super Safety Black. Precision-engineered 4140 Alloy Steel construction for maximum durability and reliability. Three-position functionality provides enhanced control and safety options. Specifications for Mars Trigger Position AR FRT Super Safety: Manufacturer: Mars Trigger Color: Black Gun Model: AR-15 Fabric/Material: 4140 Alloy Steel Trigger Type: Force Reset Trigger (FRT) Features of Mars Trigger Position AR FRT Super Safety FRT Trigger Assembly Safety Cam and Lever Detent Installation Hardware 2 Week lead time Package Contents: Mars Trigger Position AR FRT Super Safety What firearm models does the manufacturer say Mars Trigger Position AR FRT Super Safety is compatible with? The manufacturer says that Mars Trigger Position AR FRT Super Safety is compatible with AR-15Mars Trigger A009-ASM-001-V01: Position AR FRT Super Safety Black