Elftmann Match Single Stage straight Drop in Trigger Adjustable from 2.75 to 4 lbs trigger pull and is drop safe.
The ELF Drop-In Match Trigger has been built for performance. The only AR- 15 trigger using aerospace grade sealed bearings, making for an incredibly smooth and fast trigger pull. Pull weight is so easy to adjust it can be done in seconds without removing the trigger from your lower receiver. A second-to-none AR- 15 drop-in trigger system that is strong and light, made of wire EDM machined, hardened A2 tool steel and lightweight aircraft-grade aluminum. Installation can be done in minutes using your AR’s original hammer and trigger pins.