Elftmann ELF APEX | AR Drop-In Trigger w/ FA Knob | Curved | 2.75 lb | Black

The Elftmann ELF APEX AR drop-in trigger with the FA knob is a curved shoe, 2.75 pound unit in black, designed for shooters seeking superior comfort and precise trigger control. The curved trigger shoe naturally aligns with the trigger finger, which delivers smooth pull dynamics and consistent shot placement. Of all the upgrades available for an AR, the trigger is the one you feel on every single shot.

A drop-in cassette removes the hardest part of a trigger job. There is no fitting, no stoning, and no guessing about engagement surfaces.

What the Elftmann ELF APEX AR Trigger Brings to a Build

The adjustable 2.75 pound pull weight makes it suitable for competition, tactical, and precision builds alike. That weight sits in a genuinely useful place: light enough for precise shot breaks, heavy enough to be sensible on a rifle that gets used in the real world rather than only off a bench.

The integrated Flat Adjustable Knob is the feature that separates this from most drop-in triggers. It allows users to modify trigger pull weight instantly without removing the trigger from the receiver, so you can fine tune pull resistance to your preference and adjust trigger feel and reset speed on the spot rather than at the workbench.

Key Features

• Curved trigger shoe that naturally aligns with the trigger finger for a comfortable, repeatable press.
• Adjustable 2.75 pound pull weight suited to competition, tactical, and precision applications.
• Integrated FA knob that adjusts pull weight instantly, without removing the trigger from the receiver.
• Complete control over trigger feel and reset speed through a single intuitive adjustment.
• CNC machined from A2 tool steel and aircraft grade aluminum for precision and durability.
• Drop-in cassette design that installs without fitting, stoning, or gunsmithing.

Materials, Pull Weight, and Construction

Each APEX trigger is CNC machined from A2 tool steel and aircraft grade aluminum, which is the right combination for the job. Tool steel handles the engagement surfaces where hardness and wear resistance decide how long a trigger stays crisp, while aluminum carries the housing without adding weight to the receiver.

Pull weight is the specification most buyers focus on, and 2.75 pounds is a well chosen starting point. Because the Elftmann ELF APEX AR trigger is adjustable through the FA knob, that number is a baseline rather than a fixed value. The ability to change it in seconds means you can tune the rifle to a match, a class, or a hunting season without pulling anything apart. Elftmann Tactical designs its triggers around exactly that kind of user adjustment.

Installation, Adjustment, and Care

Installation is a drop-in job. Clear the rifle, separate the upper and lower receivers, remove the existing trigger group and pins, seat the cassette in the lower, and reinstall the pins according to the instructions. Take the time to confirm the unit is fully seated and that the pins are properly retained before reassembling the rifle.

Function check every time. With the rifle unloaded, verify the trigger resets, that the safety blocks the trigger in the safe position, and that the hammer does not follow the carrier when you cycle the action by hand. Then adjust pull weight with the FA knob to taste, and repeat the function check after any adjustment, because a trigger set too light can create a safety problem.

Care is simple. Keep the trigger group clean and free of heavy carbon, use lubricant sparingly since excess oil attracts fouling, and inspect the pins for movement periodically. The Elftmann ELF APEX AR trigger fits standard AR pattern lower receivers, so confirm your receiver follows the standard before ordering. Browse more triggers and internals in our parts and upgrades collection. Ships direct to your door, no FFL required.