Lmt 5.56Mm Lower Parts Kit W/ Trigger Group

The LMT 5.56mm lower parts kit with trigger group gives you the foundation that goes into LMT Defense's combat-proven rifles—now available as a standalone build component. Whether you're completing a precision rifle, a dedicated patrol gun, or a reliable duty carbine, this kit delivers the same mil-spec quality and attention to detail that professional gunsmiths and serious shooters depend on. Built entirely in the USA, it's engineered to handle the demands of the range, the field, or the job.

This is a complete lower parts kit that includes everything needed to assemble a functioning lower receiver, with the critical advantage of a professional-grade trigger group already in the package. You get the LMT AXLE two-stage trigger—the same trigger system that ships in LMT's factory rifles—which means no hunting for a separate trigger, no compatibility guessing, and no compromise on the firing control you get out of the box.

What's included covers all the hardware and functional components: trigger guard and magazine catch assemblies for reliable feeding and ergonomic control, bolt catch and pivot/takedown pin assemblies for field stripping and operation, buffer retaining hardware to keep your recoil system in place, and an ambi selector that lets you run the rifle naturally whether you shoot right- or left-handed. Build with confidence knowing these parts work together as a system, not a collection of generic substitutes.

Key Features

• Complete lower parts kit—all hardware and assemblies included in one package
• Factory LMT AXLE two-stage trigger group integrated; no separate trigger purchase required
• Ambidextrous safety selector for comfortable operation from either shoulder
• 100% American-made parts and assembly
• Magazine catch and bolt catch assemblies for reliable feeding and field operations
• Designed and manufactured to the same spec as LMT's combat and professional rifles

Specifications

Frequently Asked Questions

What's included in this lower parts kit?

The kit includes the trigger guard assembly, magazine catch assembly, bolt catch assembly, pivot and takedown pin assemblies, buffer retaining pin and spring, the complete LMT AXLE two-stage trigger group, and an ambidextrous selector. Everything needed to build a functional lower receiver is in the package.

Does this kit come with a trigger group, or do I need to buy one separately?

Yes—this is the "with trigger group" version. It includes the LMT AXLE two-stage trigger system, so you don't need to source a trigger separately. You're getting the same trigger that ships in LMT's factory rifles.

Can I use this kit for a left-handed build?

Yes. The kit includes an ambidextrous safety selector, so it works naturally for both right- and left-handed shooters.

What caliber is this kit for?

This kit is designed for 5.56mm rifles.