Elftmann ELF-SE PRO | Drop-In AR Trigger w/ PRO-LOCK | Straight | 2.75 lb | Black

The Elftmann ELF-SE PRO Drop-In AR Trigger builds on the proven ELF-SE platform by integrating the PRO-LOCK retention system for maximum stability and consistency. It features a straight trigger shoe and a crisp 2.75 pound pull weight, delivering match grade precision and repeatable performance across competition, tactical, and precision shooting. The black finished module drops into a standard AR lower and transforms how the rifle shoots.

Trigger quality is the difference between a rifle that is accurate and a shooter who is accurate with it.

What the Elftmann ELF-SE PRO Drop-In Trigger Changes

A standard mil-spec trigger has a long, gritty take up, an unpredictable break, and a heavy pull that encourages you to disturb the sights as it releases. A match grade drop-in module replaces the entire fire control group with a self contained cassette that has been assembled and tested as a unit, so the engagement surfaces are finished and mated rather than left to chance.

The result on the Elftmann ELF-SE PRO Drop-In module at 2.75 pounds is a break you can control precisely. Light enough to eliminate the muscle tension that pulls shots off call, heavy enough to remain deliberate, that weight is a widely favored setting for shooters who need both precision and confidence. Competitors, precision rifle builders, and hunters chasing small targets at distance are the obvious beneficiaries.

Key Features

• PRO-LOCK retention system that anchors the module without proprietary pins or thread locker
• Straight trigger shoe for consistent finger placement and repeatable leverage
• Factory set 2.75 pound pull weight for match grade precision
• Self contained drop-in housing that installs in minutes with no gunsmithing
• Eliminates trigger movement under recoil while still allowing easy removal
• Black finish for a clean look inside any AR pattern lower receiver

The PRO-LOCK System in Context

Retention is the weak point of most drop-in triggers. Standard cassettes rely on the original hammer and trigger pins, which can walk under recoil and introduce play between the module and the receiver, producing a trigger that feels different from shot to shot. Some designs solve this with set screws that mar the receiver or thread locker that makes removal a chore.

The Elftmann ELF-SE PRO Drop-In design takes a different route. The PRO-LOCK system securely anchors the trigger module inside the lower receiver without proprietary pins, thread lockers, or permanent modifications. Once installed, it eliminates trigger movement under recoil while still allowing easy removal when needed, which combines the simplicity of a drop-in with the solid feel of a fixed pin assembly.

The straight shoe is a meaningful choice rather than a style decision. A straight face gives a consistent contact point regardless of how your hand sits on the grip, which matters for repeatability.

Installation, Care, and Compatibility

Installing the Elftmann ELF-SE PRO Drop-In trigger is a bench job of a few minutes. Clear the rifle, separate the upper and lower, drive out the existing hammer and trigger pins, remove the old fire control group, and seat the module. Engage the PRO-LOCK retention as directed, then function check thoroughly before live fire.

Function checking a new trigger is not optional. Verify that the hammer follows the bolt carrier only when it should, that the disconnector resets positively, that the safety blocks the trigger in the safe position, and that the hammer does not fall when you release the trigger with the safety engaged.

Keep the module reasonably clean and lightly lubricated at the pivot points, and avoid flooding it with heavy grease that attracts carbon. It fits standard AR-15 and AR-10 pattern lower receivers built to mil-spec dimensions. Browse triggers, grips, and lower parts in the parts and upgrades collection. Elftmann Tactical builds its whole line around this approach.

Precise, secure, and easy to install, this trigger delivers the single biggest improvement most AR rifles can get. Ships direct to your door, no FFL required.