LANTAC M-SPEC UPPER PARTS KIT AR 15

Description

Lantac’s M-SPEC Upper Parts Kit is aimed at builders and gunsmiths who want to complete or refresh an AR-15 upper receiver without compromising on component quality. Rather than sourcing individual pieces from multiple vendors, this kit consolidates everything needed for the upper’s small parts into a single purchase built to current military specifications — meaning correct materials, appropriate heat treatments, and proper finishes throughout, not approximations.

The kit covers the two functional assemblies that most mil-spec upper parts kits are expected to contain: the ejection port cover assembly, which keeps debris out of the action when the port is closed, and the forward assist assembly, which lets the shooter manually close the bolt carrier group if it fails to go fully into battery. Both are meaningful systems on a working rifle, not cosmetic additions, and getting their component parts right matters for reliable function over time. Included are the ejection port cover, its rod and spring, the forward assist assembly itself, its spring, and its roll pin.

Everything in this kit is made in the USA and carries a lifetime warranty — a meaningful commitment for a manufacturer to extend to components that typically see hard use and occasional abuse during installation. For anyone building a new upper or replacing worn and damaged small parts on an existing rifle, this kit removes the guesswork about whether sourcing is consistent. It is a straightforward solution for a specific gap in the build process.