Available for Armalite AR-10, DPMS LR-308 (Low and High Profile) and other uppers compatible with the LR-308 and AR10 Platforms. Note that they are not compatible with the RRA LAR-8. Machined from hardened aircraft aluminum with stainless steel components and finished in MIL-SPEC hardcoat anodizing. Alpha 308 includes handguard, barrel nut and three quick attach rails.