1. Firearms
  3. Semi-Auto Rifles
  5. AR-15 Rifles

Windham WW-15 CDI 5.56mm M4 Performance Rifle with Flip-Up Sights

  • Item Number: R16M4SFSDHT
  • /
  • View More Items by Windham
  • /
  • Condition: NEW
WW-15 CDI 5.56MM M4 WITH FLIP UP SIGHTS
$1,089.99 $1,680.00

No Longer Available
This product is no longer available. We don't know when or if it will be back in stock.
  • SPRINGFIELD SAINT 556 M-LOK AR15 B5 FURNITURE

    Springfield Saint 5.56 NATO AR-15 Rifle with B5 Furniture
    $799.99

  • ATI OMNI HYBRID MAXX P4 5.56MM PISTOL

    American Tactical Omni Hybrid P4 5.56mm Semi-Auto Pistol with KeyMod Rail
    $469.99

  • ATI OMNI HYBRID MAXX 5.56MM WITH M-LOK

    American Tactical OMNI Hybrid Maxx 5.56mm AR-15 Rifle with M-LOK Rail
    $449.99

  • COLT CARBINE 5.56X45MM RIFLE WITH A2 GRIP

    Colt M4 Carbine 5.56x45 NATO CR6920 Series with Magpul Furniture
    $999.99

  • ATI MILSPORT 300 BLK 16 BBL 15 MLOK FOREND 30 RND MAG

    American Tactical Milsport 300 Blackout Optics Ready Semi-Automatic Rifle with MLOK Rail
    $629.95 $499.99

  • SIG SAUER M400 TREAD 5.56MM SEMI-AUTOMATIC RIFLE

    Sig Sauer M400 Tread 5.56mm Semi-Automatic Rifle
    $949.99 $849.99

  • RUGER AR-556 MPR 5.56MM

    Ruger AR-556 MPR 5.56mm Semi-Automatic Multi-Purpose Rifle
    $1,059.00 $919.99

  • RUGER AR-556 5.56MM WITH M-LOK

    Ruger AR-556 5.56mm Semi-Automatic Rifle with M-LOK and Heavy Contour Barrel
    $979.00 $769.99

  • ANDERSON MANUFACTURING COMPLETE OPEN TRIGGER LOWER 5.56MM

    Anderson Manufacturing Complete Open Trigger Assembled AR-15 Lower Receiver (Multi Cal)
    $149.99

  • RUGER AR-556 MPR 5.56MM FRAZZLED BROWN CERAKOTE

    Ruger AR-556 MPR 5.56mm Semi-Auto Rifle with Frazzled Brown Cerakote Finish
    $958.00 $929.99

  • RUGER AR-556 MPR 450 BUSHMASTER

    Ruger AR-556 MPR 450 Bushmaster Semi-Automatic Multi-Purpose Rifle
    $1,099.00 $1,059.99

  • WINDHAM WEAPONRY WW-15 HBC 5.56 M4 HEAVY BARREL RIFLE

    Windham WW-15 HBC 5.56mm M4A4 Rifle with Detachable Carry Handle and Heavy Barrel
    $1,099.99

  • Barnaul .223 Rem 55 gr FMJ BT Polymer Coated Steel Case 20/Box

    Barnaul .223 Rem 55 gr FMJ BT Polymer Coated Steel Case 20/Box
    $6.99
    ($0.35 / round)

  • Hornady 5.56 NATO 75 gr BTHP Match Frontier 20/Box

    Hornady 5.56 NATO 75 gr BTHP Match Frontier 20/Box
    $13.99
    ($0.70 / round)

  • Winchester 5.56mm NATO 62 gr FMJ M855 Green Tip Lake City 20/Box

    Winchester 5.56mm NATO 62 gr FMJ M855 Green Tip Lake City 20/Box
    $11.99
    ($0.60 / round)

  • Winchester 5.56mm 55 gr Full Metal Jacket USA 20/Box

    Winchester 5.56mm 55 gr Full Metal Jacket USA 20/Box
    $11.99
    ($0.60 / round)

  • Hornady 5.56 NATO 55 gr Hollow Point Match Frontier 20/Box

    Hornady 5.56 NATO 55 gr Hollow Point Match Frontier 20/Box
    $12.99
    ($0.65 / round)

  • PMC 223 Rem 55 gr FMJ BT Bronze 20/Box

    PMC 223 Rem 55 gr FMJ BT Bronze 20/Box
    $10.99
    ($0.55 / round)

  • Hornady 223 Rem 55 gr FMJ Frontier 20/Box

    Hornady 223 Rem 55 gr FMJ Frontier 20/Box
    $10.99
    ($0.55 / round)

  • Hornady 223 Rem 68 gr BTHP Match Frontier 20/Box

    Hornady 223 Rem 68 gr BTHP Match Frontier 20/Box
    $12.99
    ($0.65 / round)

  • Winchester 223 Rem 55 gr FMJ 20/Box

    Winchester 223 Rem 55 gr FMJ 20/Box
    $11.49
    ($0.57 / round)

  • Hornady 5.56 NATO 62 gr FMJ Frontier 20/Box

    Hornady 5.56 NATO 62 gr FMJ Frontier 20/Box
    $12.99
    ($0.65 / round)

  • Winchester 5.56mm 55 Gr FMJ M193 Stripper Clips 30/Box

    Winchester 5.56mm 55 Gr FMJ M193 Stripper Clips 30/Box
    $18.99
    ($0.63 / round)

  • PMC 5.56mm 55 gr FMJ-BT X-TAC 20/Box

    PMC 5.56mm 55 gr FMJ-BT X-TAC 20/Box
    $12.99
    ($0.65 / round)

  • MAGPUL PMAG 30 GEN M2 AR-15 556 NATO 30 RD MAG

    Magpul PMAG GEN M2 5.56mm 30-Round Black Magazine
    $12.95 $9.99

  • MAGPUL PMAG 40 GEN M3 AR-15 556 NATO 40 RD MAG

    Magpul PMAG 40 AR/M4 GEN M3 5.56mm 40-Round Magazine
    $19.95 $15.49

  • MAGPUL PMAG 30 GEN M3 AR-15 556 NATO 30 RD WINDOW MAG (TAN)

    Magpul PMAG GEN M3 5.56mm 30-Round Coyote Tan AR/M4 Magazine with Window
    $12.99

  • MAGPUL PMAG 10 GEN M3 AR-15 556 NATO 10 RD MAG

    Magpul PMAG GEN M3 5.56mm 10-Round AR-15 Magazine
    $10.99

  • MAGPUL PMAG 30 GEN M3 AR-15 556 NATO 30 RD WINDOW MAG

    Magpul PMAG GEN M3 5.56mm 30-Round Black Magazine with Window
    $17.99

  • MAGPUL PMAG 30 GEN M2 AR-15 556 NATO 30 RD WINDOW MAG

    Magpul PMAG GEN M2 5.56mm 30-Round Magazine with Window
    $11.49

  • MAGPUL PMAG D-60 AR-15 556 NATO 60 RD DRUM

    Magpul PMAG D-60 5.56x45 NATO 60-Round Drum Magazine
    $129.99 $94.99

  • MAGPUL PMAG 20 GEN M3 AR-15 556 NATO 20 RD MAG

    Magpul PMAG GEN M3 5.56mm 20-Round Black Magazine
    $10.99

  • AMEND2 MOD 2 AR-15 556 30 RD BLACK MAG

    Amend2 AR15/M4 Mod.2 5.56mm/223 Rem. 30-Round Magazine (Black)
    $14.99 $11.99

  • DANIEL DEFENSE AR15 223 REM 32 ROUND 5.56 MAG BLACK

    Daniel Defense AR15 Magazine 223 REM 5.56 NATO 32 Round Factory Magazine Black
    $23.00 $22.99

  • HEXMAG 5.56/223 30 RD MAG

    Hexmag 5.56/223 30 Round Black Magazine Series 2
    $14.99 $13.99

  • BLACK RAIN ORDNANCE AR-15 30 RD MAG PUNISHER W/ AMERICAN FLAG

    Black Rain Ordnance 5.56mm 30-Round AR-15 Magazine with American Flag Punisher
    $29.99

Product Description

A team of the finest firearms people in the U.S.A. has been re-assembled to bring to market the highest quality AR type rifle possible. These good Maine folks - all former employees of Bushmaster Firearms - offer many years of experience in the industry, and all look forward to working with you, to serving your needs, and to building you a great rifle. And Windham Weaponry will back up that promise of quality with a Transferable Lifetime Warranty on their rifles.

Windham Weaponry developed the CDI as a result of numerous customer requests for a rifle that includes many of the most popular accessories. Think of it as the firearms equivalent of a Shelby Mustang - already factory equipped for maximum performance.

Accuracy, durability, fit, finish, value, this carbine has it all, and with Windham’s Lifetime Transferable Warranty, you know it will retain its value for years to come.

Firearm Specifications

  • Model: R16M4SFSDHT
  • Caliber: .223 Rem. / 5.56mm NATO
  • Type: Rifle
  • Action: Semi-Automatic Gas Impingement System
  • Capacity: 30 + 1- Ships with one 30 Round Magazine ( accepts all std. sizes)
  • Safety: Manual Lever with Indicator Markings on Both Sides of Receiver
  • Receiver: M4A4 Type Flat Top Upper Receiver
  • Receiver Material: Forged 7075 T6 Aircraft Aluminum with Aluminum Trigger Guard
  • Receiver Finish: Hardcoat Black Anodize Finish
  • Bolt Material: Carpenter 158 Steel - MP/HP Tested
  • Barrel: 16” M4 Profile Chrome Lined with Vortex Flash Suppressor
  • Barrel Material: 4150 Chrome Moly Vanadium 11595E Steel w. M4 Feed Ramps
  • Rifling: 1 Turn in 9” - Right Hand Twist
  • Stock: Magpul MOE 6-Position Telescoping Buttstock
  • Forend/Pistol Grip: Diamondhead Free-float Forend w. Magpul MOE AFG Angled Grip / Magpul MOE Black Pistolgrip w. Storage Compartment
  • Rear Sight: Diamondhead Dual Aperture Flip-up Sight
  • Front Sight: Diamondhead Front Flip-up Sight
  • Packaging: Hard Plastic Gun Case with Black Web Sling & Operators Manual

Customer Comments & Questions

Customer Reviews

Write a review
(5 out of 5) Great Rifle
by from Dove Creek, Colorado on

I researched this rifle long and hard before I jumped into buying it, and every review I read online was extremely positive about the CDI model and the Windham Weaponry brand in general. I decided to order it and have not been disappointed in the least. The rifle has lived up to the high expectations I developed from the research I did. It has a nice finish, and the Diamondhead flip-ups and rail are solid and tight. I've put only 200-300 rounds through mine so far, mostly American Eagle and some steel cased Tulammo, but the rifle has performed without fail through the little shooting I've done so far. Windham has my vote when it comes to price/ quality value, especially when you factor in the discount from SOS.