*M4 Six Position Stock
*Either Milspec or Commercial Receiver Extension
*Carbine Length Spring
*Carbine End Plate
*Carbine End Plate Castle Nut
*Carbine Standard Weight Buffer (Color...
This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to - www.P65Warnings.ca.gov