Out of stock
SKU: LAN01-PKIT-UP
UPC: 614347539750
MPN: 01-PKIT-UP
The Lantac M-spec Upper Parts Kit AR-15 is a complete upper receiver component solution engineered for shooters who demand reliability in mission-critical environments. Built to military specification standards, this kit consolidates essential upper receiver parts into a single, coordinated package—eliminating the guesswork of sourcing individual components from disparate manufacturers. Whether you're building a duty rifle, upgrading an existing platform, or assembling a precision patrol carbine, this M-spec kit delivers the consistency and interoperability required by law enforcement, military, and civilian tactical operators alike.
LanTac USA LLC manufactures this kit to exacting military specification tolerances, ensuring that each component integrates seamlessly with standard AR-15 upper receiver assemblies. The M-spec designation indicates adherence to strict dimensional and functional standards used by military armorers and OEM builders, providing the dimensional accuracy necessary for reliable feeding, extraction, and operation under sustained use. By sourcing parts as a validated kit rather than individually, you eliminate tolerance stack-up and compatibility gaps that can arise from mixing components across manufacturers—a critical consideration when reliability determines mission success or personal safety.
This upper parts kit is ideal for armorer-level builds, duty weapon construction, and shooters who understand that proper component selection is non-negotiable. The compact 3 x 0.75 x 5 inch package and lightweight 0.13 lb configuration make it easy to transport and stage during build operations. Compatible with standard AR-15 upper receivers and lower receiver assemblies, installation requires basic mechanical knowledge and standard gunsmith tools. Law enforcement agencies, military personnel, and serious civilian shooters who demand mil-spec reliability will recognize the value of a pre-validated component kit that eliminates the variables inherent in piecemeal assembly.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
