The Lead Star Arms premier lower receiver is the ultimate in precision! Designed for much tighter tolerances to unleash the full accuracy of the AR-15.Features: Fully CNC machined from 7075-T6 billet aluminum for extreme precision and enhanced durability.Lead Star’s truss system design reinforces key areas for increased strength without added weight.Front magwell grip surface designed for the operator to grip and maintain weapon control even in the most extreme conditions.Beveled magwell entry allows faster magazine changes.Tension device to increase rigidity between upper and lower receivers.Built-in trigger guard eliminates the need for a flip down trigger guard.Designed to be compatible with MIL-spec upper receivers so it can be used if necessary but lines will not match. For the best selection of Modern Sporting Rifle Parts and Accessories, shop Palmetto State Armory!