Description DO NOT ADD BACK UP SIGHTS ON THE DROPDOWN OPTION TO THIS PRODUCT. IT COMES WITH SIGHTS INSTALLED ALREADY – 4150 CMV Melonite – 1/7 Twist – M4 Feed Ramps – Carbine Length Gas System W/ FSB – QPQ Corrosion Resistant Finish – A2 Flash Hider – 1/2 x 28 Threaded Muzzle – M16 BCG – Charging Handle – M4 Handguard – 7075 – T6 Mil-Spec A2 Carry Handle w Rear Sight – Forward Assist – Ejection Port Assembly U556103A2M4FSB 736684139964 ALL NFA RULES APPLY It is the customer’s responsibility to be aware of all applicable laws and regulations regarding the purchase and ownership of uppers with a barrel length of less than 16″. Federal NFA regulations are applicable to this item. Handling firearms or firearms parts can expose you to lead, and other petroleum products known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to www.p65warnings.ca.gov (CA Health and Safety Code Section 25249.6).
