CMMG AR-15 M4 LE A3 Flat-Top Upper Assembly 5.56x45mm NATO 1 in 9" Twist 16" Barrel WASP Melonite Finished Chrome Moly Matte with M4 Handguard, A2 Front Sight, Flash Hider Pre-Ban

Product #: 120046 CMMG #: 55BE1F0 UPC #: 852005002189
$579.99
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Product Information

This complete CMMG AR-15 M4 LE Upper Assembly features a chrome-moly steel barrel with a WASP Melonite treated bore and exterior. M4 feed ramps ensure reliable feeding and the 5.56x45mm NATO chamber allows the use of both commercial or surplus mil-spec ammunition.

CMMG's durable Weapons Armament Surface Protection (WASP) Melonite treatment is a unique protective coating applied to the barrel that surface-hardens the metal, extending barrel service life by reducing friction in the bore and lessening bore surface wear. Also referred to as Nitriding, this treatment produces an extremely hard, slick surface on steel that resists carbon adhesion and increases corrosion resistance, making for easier cleaning and maintenance. Nitriding converts the steel's surface without any build-up, retaining all the benefits of traditional chrome lining without suffering from the accuracy degradation commonly encountered due to uneven application of chrome inside the barrel's bore.

Technical Information:
  • Upper Receiver: A3 Flat-Top
  • Barrel Length: 16"
  • Barrel Contour: M4
  • Barrel Material: Chrome Moly Steel
  • Muzzle Thread Pattern: 1/2"-28
  • Chrome Lined: No
  • Barrel Finish: WASP Melonite
  • Twist Rate: 1 in 9"
  • Chamber: 5.56x45mm NATO
  • M4 Feed Ramps: Yes
  • Muzzle Device: A2 Flash Hider
  • Gas System Length: Carbine
  • Gas Block Diameter: 0.750"
  • Handguard: Polymer M4-Style
  • Sights: Mil Spec A2 "F" Marked Front, No Rear

NOTE: All CMMG uppers are test fired at their facility before shipment to the end user.
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