Affordable, American-made moder sporting rifle with the Ruger rugged reliability. Flattop upper receiver is made from aerospace-grade 7075-T6 aluminum forging. Cold hammer-forged 4140 chrome-moly steel barrel with 1:8" twist rate. Bolt is machined from 9310 alloy steel. Also includes: One, 30-round Magpul® PMAG®.