The Yankee Hill Machine 128 is a specialty product tailored for individuals looking to build their own upper or seeking a lower receiver for an extra upper. It is a fully-assembled lower receiver that is range-ready straight from the package. With takedown pins making assembly simple, getting started is as easy as inserting your upper receiver and loading magazines.This lower receiver has been designed and machined entirely in-house, guaranteeing high-quality and efficiency. Its construction from 7075-T6 aircraft grade aluminum (forged) assures an optimal blend of durability and lightweight design. An additional feature is the oversized magazine well chamfers which aid in effortless magazine changes.Yankee Hill Machine 128 lower receiver is compatible with all generations of PMAG\'s and Mil-Spec Upper receivers. This versatility means it can easily fit all standard parts. To ensure longevity and resistance to wear and tear, it has been hardcoat anodized in a matte black finish to military specifications or better. Pre-assembled with a complete lower parts kit, this lower receiver also includes an adjustable (6 position) commercial carbine stock. Furthermore, it features a standard A2 black pistol grip for enhanced control and comfort during use.