M2 Armament Group Drop-in Performance Trigger 3.5lb Black. 54.0 lb Single-Stage Drop-In Match Trigger. Engineered for tactical shooters competition marksmen and custom builders seeking a glass-smooth break this cassette-style drop-in trigger replaces gritty mil-spec trigger assemblies with zero creep minimal overtravel and a lightning-fast reset. Specifications for M2 Armament Group Drop-in Performance Trigger: Manufacturer: M2 Armament Group Color: Black Trigger Pull Weight: 3.5 lb Gun Model: AR-15 Package Contents: M2 Armament Group Drop-in Performance Trigger What firearm models does the manufacturer say M2 Armament Group Drop-in Performance Trigger is compatible with? The manufacturer says that M2 Armament Group Drop-in Performance Trigger is compatible with AR-15M2 Armament Group M2-LRCK-MOAB: Drop-in Performance Trigger 3.5lb Black