This AR-15 pistol build kit comes with a 10.5" barrel and a upper receiver chambered in .223Rem / 5.56NATO. A pistol buffer tube assembly, lower parts kit and grip. Just add a lower receiver to complete your project.
-CALIFORNIA PROPOSITION 65 WARNING:-
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information: www.P65Warnings.ca.gov