NEW OLD STOCK, THIS WAS PART OF A COMPLETE RIFLE THAT I SEPERATED THE UPPER FROM THE LOWER TO SELL SEPERATELY. CERRO KEYHOLE BLOCK I SOCOM UPPER, 14.5" M4HB NFA THREADED BARREL, F MARKED FRONT SIGHT BASE, MILLED FLATS, VINTAGE 06/2004 DATE CODE WITH A 600 METER MATECH REAR SIGHT, COMPLETE WITH ROLL DIE STAMPED M16 BOLT CARRIER GROUP & CHARGING HANDLE & P & S M4 RAS RAIL SYSTEM INCLUDES (3) 11 RIB PANELS (1) 6 RIB PANEL AND THE VERTICLE FOREGRIP. UPPER DOES NOT INCLUDE A FLASH HIDER AS MOST BUYERS ADD THEIR OWN MUZZLE DEVICE TO USE WITH A SUPPRESSOR. (I NOW USE S/S THREAD PROTECTORS TO PROTECT THE THREADS AROUND THE SHOP.) THIS VINTAGE UNIT IS NEW & UNFIRED WITH THE BARREL WICK DOWN THE PIPE. YES IT IS EXPENSIVE BUT SELDOM ENCOUNTERED IN THIS CONDITION, $ 2650.00 DELIVERED Priority Mail Insured with tracking. I ACCEPT DISCREET ZELLE & USPS MONEY ORDERS ONLY. Due to COVID-19 shipping & handling has been delayed up to 10 days. E-MAIL IS BEST; hensley.t.d@gmail.com