AR-Stoner M4 Carbine Kit AR-15 5.56x45mm NATO 16" Barrel Daniel Defense DDM4 Rail

Product #: 629883 AR-Stoner #: OEMRKT-MW02
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  • Information


  • Daniel Defense DDM4 7.0 Free Float Quad Rail Handguard, installed
  • Completely assembled upper receiver with pinned, F-marked A2-style front sight
  • 5.56x45mm NATO Chamber
  • M4 feed ramps
  • Properly staked, chrome lined gas key
  • MPI-tested Carpenter 158 steel bolt
  • Complete lower parts kit with Mil-spec diameter receiver extension and collapsible buttstock


A MidwayUSA Exclusive! We took an extremely popular complete AR-15 Carbine Kit and added a premium Daniel Defense DDM4 7.0 Free Float Quad Rail Handguard, a $265 value! The DDM4 7.0 extends all the way to the Front Sight Base/Gas Block, providing ample room for mounting tactical accessories and greater accuracy potential by isolating the barrel from outside influences. The M4 rail is secured to the upper receiver with the Daniel Defense Bolt-Up System using 4 steel fasteners for rock solid stability and repeatable positioning of rail mounted accessories, and includes 4 Integral Quick Detach Sling Swivel Sockets for multiple sling mounting options.


This AR-Stoner M4 Carbine Kit includes everything needed to turn your Stripped AR-15 Lower Receiver into a complete, fully functional rifle. This kit features an assembled A3 Flat-Top Upper Receiver with a 16" M4 Contour Barrel, Carbine-Length gas system, F-Marked Front Sight Assembly, Daniel Defense DDM4 7.0 Free Float Quad Rail, and an A2 Flash Hider. The barrel's 5.56x45mm NATO Chamber, M4 Feed Ramps and 1 in 9" twist rifling ensure reliable feeding and functioning with a wide variety of both commercial and surplus ammunition using light-or heavy-weight projectiles. The Bolt Carrier is machined from 8620 steel for strength, incorporates a properly staked, chrome lined gas key, and houses a Carpenter 158 Steel Bolt that has been High Pressure Tested and Magnetic Particle Inspected.

The kit includes a complete Lower Receiver Parts Kit, with an M4-Style Collapsible Stock Assembly including a Mil-Spec diameter buffer tube, carbine buffer and buffer spring. Stripped lower receiver and magazines are not included. Upper receiver is fully assembled at the factory, lower parts kit and stock assembly will need to be installed by the end-user.

Upper Assembly Technical Information

  • Upper Receiver: A3 Flat-Top
  • Barrel Length: 16"
  • Barrel Contour: M4
  • Barrel Material: 4140 Chrome Moly Vanadium Steel
  • Muzzle Thread Pattern: 1/2"-28
  • Chrome Lined: No
  • Barrel Finish: Manganese Phosphate (Parkerized)
  • 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: Daniel Defense DDM4 7.0, Free Floating
  • Sights: F-Marked Fixed Front, No Rear

Lower Parts Kit Includes

  • Bolt Catch
  • Bolt Catch Plunger
  • Bolt Catch Roll Pin
  • Bolt Catch Spring
  • Buffer Retainer
  • Buffer Retainer Spring
  • Disconnector
  • Disconnector Spring
  • Hammer
  • Hammer Pin
  • Hammer Spring
  • Magazine Catch
  • Magazine Catch Button
  • Magazine Catch Spring
  • A2 Pistol Grip
  • Pistol Grip Lock Washer
  • Pistol Grip Screw
  • Pivot Pin
  • Pivot Pin Detent
  • Pivot Pin Detent Spring
  • Safety Selector
  • Safety Selector Detent
  • Safety Selector Detent Spring
  • Takedown Pin
  • Takedown Pin Detent
  • Takedown Pin Detent Spring
  • Trigger
  • Trigger Guard
  • Trigger Guard Roll Pin
  • Trigger Pin
  • Trigger Spring

Stock Assembly Technical Information

  • Stock: M4-Style Collapsible, Polymer
  • Receiver Extension: Mil-Spec Diameter
  • Buffer: Carbine
  • Buffer Spring: Carbine
  • Receiver Extension Lock Ring (Castle Nut) Included

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