Description
The LANTAC E-CT1 is a fixed 3.5lb single stage trigger built for folks who want their AR to break clean and reset fast. LANTAC took the original E-CT1 and reworked the internal geometry from the ground up, changing the sear engagement surfaces to strip out creep and deliver a break that feels genuinely crisp. Pair that with a reset that comes back quickly and near-zero overtravel, and you've got a trigger that helps tighten up your split times without you having to think about it.
What Makes the E-CT1 Tick
The important parts here are the hammer, trigger, and disconnector, all precision machined from S7 tool steel using a proprietary sear process that leaves an incredibly smooth engagement surface. Every one of those parts gets case hardened before a black oxide finish, so the wear surfaces hold up over a lot of rounds. It all rides inside a CNC machined aluminum cassette finished in Type 3 hard coat anodizing, which keeps the whole assembly rigid and consistent shot to shot.
Installing the LANTAC E-CT1
This one drops right into any mil-spec AR-15 or AR-10 lower, and it plays nice with receivers chambered in 5.56/.223 or 7.62/.308. The cassette has adjustment set screws built in so you can dial in perfect pin tension against your specific receiver, which means no wobble and no worrying about the trigger walking loose. You can run it with standard trigger and hammer pins or use the threaded rod and cap screw setup, so it isn't picky about anti-rotation or captive pins the way some drop-ins are.
Whether you're building out a duty rifle or setting up a range gun for competition, the E-CT1 is a real upgrade over a mil-spec trigger. It's made in the USA and comes ready to run right out of the package.
Key Specifications
- Model: E-CT1 (ECT-1)
- Type: Single Stage Drop-In Trigger
- Trigger Shoe: Curved
- Pull Weight: 3.5 lb (fixed, non-adjustable)
- Fitment: AR-15 / AR-10 mil-spec lowers, 5.56/.223 and 7.62/.308
- Internals Material: S7 Tool Steel (hammer, trigger, disconnector)
- Cassette: CNC Machined Aluminum, Type 3 Hard Coat Anodized
- Finish: Black; internals black oxide over case hardening
- Pin Compatibility: Standard pins or included threaded rods/cap screws
- Color: Black
- Made In: USA (Fort Worth, Texas)
- Manufacturer: Lantac USA
- MPN: 01-LP-ECT1C
- UPC: 712038709816
What’s Included
- LANTAC E-CT1 single stage curved trigger assembly (aluminum cassette)
- Pin set (standard pins plus threaded rods and cap screws)
Frequently Asked Questions
Will the LANTAC E-CT1 fit my AR-15 and AR-10?
Yes. The E-CT1 is designed to drop into any mil-spec AR lower and works in receivers chambered in 5.56/.223 or 7.62/.308. As long as your lower uses standard mil-spec dimensions, it'll seat right in.
Does the E-CT1 need special anti-rotation or captive pins?
No, and that's one of the nice things about it. The aluminum cassette has adjustment set screws built in that let you dial in the exact pin tension against your receiver, so it stays put without captive pins. You can run standard trigger and hammer pins or the threaded rod and cap screw hardware that comes in the box.
Is the 3.5lb pull weight on the E-CT1 adjustable?
The pull weight is fixed at 3.5 pounds and is not user-adjustable. The set screws in the cassette are there to fine-tune pin tension and fit inside your lower, not to change the pull weight. If you want a different weight, LANTAC offers the E-CT1 in other pull options.
What is the E-CT1 made from and how durable is it?
The hammer, trigger, and disconnector are precision machined from S7 tool steel and then case hardened before getting a black oxide finish, which is built to hold up to serious round counts. The cassette itself is CNC machined aluminum with a Type 3 hard coat anodized finish. It's a made-in-USA part designed for both duty and competition use.





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