FN M16A4 Upper NOS


Out of stock

Out of stock

SKU: FNUPPER-4E Categories: ,


FN M16A4 factory original uppers, Charging Handle and BCG are included. These are in NOS condition with some 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


Orders will be shipped via FedEx. Deliveries will be Monday – Friday (no weekend deliveries). An adult signature is required for all deliveries.


Additional information

Weight 6 lbs
Dimensions 32 × 6 × 6 in


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