CMMG M4 LE AR-15 Carbine Kit 5.56x45mm NATO 16" Barrel with M4 LE Upper Assembly, Collapsible Stock Assembly, Lower Receiver Parts Kit

Product #: 763020 CMMG #: 55AA0EC UPC #: 852005002554
Please Sign In or Create an Account to use this feature.
  • Information
  • Videos
CMMG's M4 LE AR-15 Carbine Kit includes everything needed for assembling a complete rifle on your stripped lower receiver. The fully assembled and headspaced upper features CMMG's unique WASP Melonite surface treatment on both the interior and exterior surfaces, ensuring maximum wear and corrosion resistance. The upper comes complete with an A2 front sight/gas block, A2 flash hider, bayonet lug, charging handle, bolt carrier group, and M4-style handguards. Also included is a standard 6-position collapsible M4-style buttstock assembly and lower receiver parts kit. Magazine not included.

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.

Kit Contents:
  • Complete M4 LE AR-15 5.56x45mm NATO Upper Assembly
  • Lower Receiver Parts Kit
  • Complete M4-Style Buttstock Assembly (Stock, Buffer Tube, Buffer, Recoil Spring, Lock Ring)

Upper Receiver Specifications:
  • 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

Product Videos

  • CMMG Video
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.