CMMG AR-15 Revolution M4 LE A3 Flat-Top Upper Assembly 5.56x45mm NATO 1 in 9" Twist 16" Barrel Chrome Molly Matte with Revolution Modular Rail Handguard, Flash Hider

Product #: 218519 CMMG #: 55BE13F UPC #: 815835011288
Please Sign In or Create an Account to use this feature.
  • 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 surplus ammunition. All steel parts feature a heavy mil-spec phosphate finish for superior corrosion resistance; aluminum parts are hard coat anodized. The customizable Revolution Handguard has a continuous top rail and provisions for mounting rail sections to attach accessories, while also free floating the barrel for greater accuracy potential.

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: CMMG Revolution Customizable Free Float, Carbine Length
  • Sights: None, Low Profile Single Rail Gas Block
  • Extras: 3 Smooth Handguard Panels

NOTE: All CMMG uppers are test fired at their facility before shipment to the end user.
Was this information helpful? Yes No

Thank you! Your valuable feedback helps improve our product information and offering.

Help Us Improve

Please enter the missing required fields:

    Do you accept our terms and conditions? *
    Know someone who may like this? Email this Page to a Friend

    Customer Reviews

    The statements and opinions expressed within Customer Reviews reflect each author's personal perspective and do not imply endorsement by MidwayUSA, its Employees or any other organization. Customers should in no way infer that MidwayUSA has validated review information as safe, accurate or appropriate.

    NOTE: Prices, specifications and availability are subject to change without notice. We reserve the right to correct typographic, photographic and/or descriptive errors.