Lantac M-SPEC UPK. AR15 Upper Parts Kit

The Lantac M-SPEC Upper Parts Kit (UPK) for AR15 style rifles from Lantac is engineered to the highest standards, using the correct materials, heat treatments, and finishes to meet current military specifications and deliver enduring performance in demanding environments. This USA-made kit includes essential components for reliable upper receiver operation, including the Ejection Port Cover with its rod and spring, and the Forward Assist Assembly with its spring and roll pin, all designed to integrate seamlessly into your build for smooth cycling and enhanced durability. Built to support precision, function, and longevity, the UPK provides the core hardware needed to keep your upper receiver functioning under rugged field conditions while maintaining a clean, professional fit and finish. Whether youre completing a fresh build or upgrading a legacy AR15 platform, the Lantac M-SPEC UPK offers a cohesive, expertly engineered solution that aligns with strict quality expectations and delivers consistent performance across a variety of rifles and configurations. Backed by a lifetime warranty, this kit helps you achieve dependable operation and peace of mind during range days, hunts, or duty scenarios.