The Lancer Tactical lower is made of durable 7075-T6 aluminum and has a black anodized coating. The model has an enlarged magazine shaft, as well as the possibility of installing an enlarged magazine reset button, which will be very relevant for sports shooters.Features:Changeable magazine well extensions3 magazine well extension sizes: Standard, Tactical, CompetitionReceiver machined from 7075a^'T6 Aluminum forging with broached magazine wellMagazine well extensions machined from billet aluminumOversized magazine release buttonAmbidextrous bolt releaseCoating a^' MILa^'Aa^'8625, TYPE III CLASS 2Designed, Tooled, Manufactured & Assembled in USA