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Swapping out a gritty mil-spec trigger is one of the easiest ways to make an AR feel like a whole different rifle, and the Luth-AR LR-MTA makes that upgrade about as painless as it gets. It's a one-piece, self-contained trigger pack, so instead of fiddling with loose hammers, springs, and disconnectors, you drop the whole unit into your lower and secure it with standard trigger pins. The result is a clean, repeatable break at roughly 3.5 pounds that carries over shot after shot.
The housing is machined from 6061 aluminum with a hard-coat black anodized finish, so it holds up to hard use and looks the part. Inside, the hammer, trigger, and disconnector are precision cut from A2 tool steel using an EDM process, then heat treated to 40-45 HRC for durability and given a black nitride finish. Tuned SST bushings and springs are what give the trigger its consistent 3.5 lb pull and that crisp let-off you're after.
This assembly is built around the standard 0.154 inch trigger pin size and works with any standard AR lower. It's a solid match across .22, .223/5.56mm, and .30 caliber builds, and Luth-AR has confirmed it functions in AR-10 style rifles as well, so it's a flexible option whether you're finishing a 5.56 carbine or a larger frame rifle. One thing worth knowing before you install: the length of the trigger can interfere with some aftermarket trigger guards, so check your setup if you're running something other than a standard guard.
For anyone building a rifle from scratch or looking to ditch a rough factory trigger, this is a straightforward, made-in-America upgrade that gives you real trigger-job feel without the wait or the bench time.
Not at all. It's a complete drop-in unit, so the hammer, trigger, and disconnector are all contained in one housing that sets into a standard AR lower and holds in place with standard trigger pins. Most folks with basic tools can have it in and running in a few minutes.
Yes. Luth-AR has confirmed the Modular Trigger Assembly functions in AR-10 style rifles, and it's rated compatible with .22, .223/5.56mm, and .30 caliber builds. It uses the standard 0.154 inch trigger pin size found on typical AR lowers.
It's a single-stage trigger tuned to roughly 3.5 pounds with a crisp, clean break. The A2 tool steel internals and tuned SST springs give it a consistent, repeatable feel from one shot to the next, which is a big step up from a typical rough mil-spec trigger.
One thing to check is your trigger guard. The length of the trigger can interfere with certain aftermarket trigger guards, so if you're running something other than a standard guard, verify clearance before install. With a standard setup, it drops right in.
| UPC | 812058030928 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | LR-MTA |
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