FN M16A4 Upper NOS AR-15

$899.99 $599.99


FN M16A4 Upper NOS AR-15

$899.99 $599.99

In stock


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FN M16A4 factory original uppers, Charging Handle and BCG are NOT Included. These are in NOS condition most in perfect shape with a few with some very minor handling marks. The upper includes an original FN USGI Mil Spec chrome lined 20″ cage coded barrel with 1/7 twist, a P&S Products Co. M5 RAS Picatinny hand guard assembly (Licensed USGI production) with P&S rail covers and a USGI cage code marked MaTech 600 meter rear sight. These uppers are identical to those issued to the USMC.  A great place to start in building a first rate modern battle rifle.


  • Barrel Length: 20″
  • Gas System: Rifle length
  • 1:7 twist rate
  • Chrome Lining: Yes
  • Muzzle Thread: 1/2×28
  • Chamber: 5.56×45 NATO
  • Gas Block: Standard Front Post gas block/sight
  • Muzzle Device: A2 Flash Hider
  • Handguard Type: P&S Products Co. M5 RAS


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