Brand new Never fired Double Star A3 M4 Flat top Chrome lined 16 inch upper. 4150, 1 x 9 twist with M4 feed ramps in chamber. Barrel is marked 5.56 Nato 1x9 twist "Chromed" Upper reciever has the keyhole.
Complete with a Double Star full auto bolt and charging handle, also brand new never fired
625 shipped USP MO or add 3.5% for DISCREET paypal