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The ELF AR-9 Drop-In Match Trigger has been built for performance. Specifically developed for 9mm and .45 PCC platforms, after tens of thousands of rounds of testing in all platforms, the boss has decided this is the best trigger we have ever produced and does it all in every AR platform. It has a u-shaped captured disconnector that forces a positive hold on the hammer and also has a "pad" that matches up to an extension on the hammer. The pad is directly in line with the rear trigger pin so when the hammer is stopped by those matching surfaces it effectively eliminates trigger slap from the hammer hitting the disconnector and greatly enhances the feel of the trigger during live fire. Absolutely compatible with the Sig MPX!
Aerospace Grade Sealed Bearings
The only AR-15 trigger using aerospace grade sealed bearings, making for an incredibly smooth and fast trigger pull.
Double Wound Polished Piano Wire Hammer Spring
Our exclusive .043″ double double wound polished piano wire hammer spring ensures full ignition of any ammo including .308 and 7.62x39.
Easily Adjustable Pull Weight
Pull weight from 4lbs to 7lbs is so easy to adjust it can be done in seconds without removing the trigger from your lower receiver.
Glass-Rod Crisp Break
The amazingly short takeup, glass-rod crisp break and next to zero over-travel can be compared to the finest custom 1911 triggers. Adjustability puts you in charge based on your preference. If you are looking for the finest adjustable trigger for your service AR-15 platform, this is the trigger system for you.
Drop-In Installation
Installation can be done in minutes using your AR's original hammer and trigger pins.

✔ Compatible with SIG MPX!
Yes, the ELF AR-9 Trigger has been tested in and is
100% compatible with the SIG MPX Submachine Gun.
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100% made in America with a Lifetime Guarantee! | ![]() Installation Instructions |
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Note: This product can not be shipped outside the United States in accordance with International Traffic in Arms Regulations (ITAR).
Features | Benefits |
Adjustable from 4lbs to 2-3/4lbs Without Removing from Lower | Fast & Easy Trigger Adjustment |
Very Short Pull and Reset | Allows for Rapid Follow-up Shots and Greater Accuracy. |
Absolutely Drop-Safe regardless of pull-weight | Protects from Accidental Discharge if Rifle is Dropped |
Exclusive double double wound hammer spring and heavy hammer | Ensures Proper Ignition of Any Ammunition |
Made of lightweight aircraft-grade aluminum and hardened steel | Sturdy Trigger Assembly Designed for Rugged, Trouble-Free Use. |
Unique Design of Disconnect Allows Full 1/4″ Width | Eliminates Possibility of Wear and Double-Firing |
High performance trigger and hammer needle bearings | For Smoother and Faster Firing |
Small Pin and Large Pin Versions Available | Fits Any Mil-Spec AR-15 ... Including Colt! |