Lead Star Arms BLEM LSA-15 Skeletonized AR-15 Receiver Set, Black

Upper Receiver:Precision CNC machined from 7075-T6 billet aluminum.Lead Star's truss system design reinforces key areas for increased strength without added weight.Skeletonized for further weight reduction.Flat top Picatinny design for versatility in mounting optics and other enhanced components.CNC engraved numbered rail system for indexing.M4 feed ramps for added reliability.Type III Class 2 hard coat anodized.Designed to be compatible with MIL-spec lower receivers so it can be used, if necessary, but lines will not match. Lower Receiver: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.Skeletonized for further weight reduction.The front magwell grip surface is 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.A built-in trigger guard eliminates the need for a flip-down trigger guard.Type III Class 2 hard coat anodized.Designed to be compatible with MIL-spec upper receivers so it can be used, if necessary, but lines will not match.