12.5" / 16" 5.56 XM177 E2 Retro Upper

Built to replicate the Nostalgic XM177E2 used by the Special
Forces during the Vietnam War.

Specifications:

• Upper has been Cerakoted to match XM Grey.
• Barrel assembly exterior Custom Cerakoted to resemble a
  Manganese Phosphate finish while retaining the QPQ Nitride finish in the
  chamber and rifling.
• CAR Hand Guard w/ A1 Delta Ring Assembly.
• Forged T6 7075 Aluminum A1 upper with tear drop forward
  assist.
• 12.5" 5.56 SEPR Carbine Barrel with pinned and welded
  XM177 Style Flash hider pinned and welded to meet the legal 16" Overall
  length.
• 4150 CMV Steel Barrel.
• Features Polygonal SEPR Rifling technology which
  significantly reduces bullet deformation. Fired bullets have a symmetrical
  trajectory through the barrel and exist in the straightest line possible. The
  SEPR process also ensures the tightest seal of the projectile. This superb seal
  significantly reduces escaping gases and loss of gas pressures. Each barrel has
  undergone a precision honing and boring process, which produces a straight and
  glass-smooth rifle bore.
• Includes M16 bolt carrier group with 9310 MPI tested bolt.
• Custom built to order. Please allow 3-4 weeks for your order
  to ship.
• As an upgrade we can true the upper surface where the barrel
  extensions inserts to ensure a flat mating surface. Please allow an additional
  2 to 3 days to complete.
• Polished feed ramps are also available as an upgrade. Please
  allow an additional 2 to 3 days to complete.
• Assembled 100% U.S. made parts.
• Limited lifetime warranty.
• Shipped insured with signature required upon delivery.