Double Star Ar 15 Ds4 Upper
Flat top upper receiver is ready for the attachment of Picatinny accessories and barrel. Mfg: Double Star. Barrel is chambered in 5.56x45mm NATO, and does not have chrome lining. Low profile gas block installs onto the barrels .750"" OD gas shoulder. Double Star Upper with 16"" DS-4 Barrel, ready to be your next build's foundation. DS-4 barrel features a 1-9 twist, M4 feedramps and a matte black, phosphate finish. Carbine gas tube and barrel assembly are ready for your choice of handguard and muzzle device.