Tags ar-10 .308 12" slim profile key mod free floating handguard with monolithic top rail 12 10 10", super, light, keymod, /steel, barrel, nut, parts 10", upper 10" 10" 10" 10" 10" 10" 10" 10" 10" 10" 10" 10" 10" 10" 10" 10" 10" 10" 10" 10"