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

CORE 15 M4 223/5.56 DIRECT GAS IMPINGEMENT RIFLE

  • Item Number: 100278
  • /
  • View More Items by Core 15
  • /
  • Condition: NEW
Core 15
$699.99 $899.99

Temporarily Out of Stock

Includes FREE shipping
  • RADICAL FIREARMS RF-15 SOCOM 5.56NATOAR-15 RIFLE WITH 15-INCH RPR FREE-FLOAT RAIL

    Radical Firearms RF-15 Socom 5.56 NATO AR-15 Rifle with 15-Inch RPR Free-Float Rail
    $685.00 $419.99

  • SPRINGFIELD SAINT 5.56MM VICTOR VS 16` OPTIC 4XMAGS, BAG

    Springfield Saint Victor 5.56 NATO Gear Pac with Viridian Venta Green Dot, Four Mags and Rifle Bag
    $1,449.99 $1,099.99

  • NEXGEN NG15 223 WYLDE RIFLE BRONZE NITRIDE

    NexGen Arms AR-15 223 Wylde Semi-Auto Rifle with Bronze Nitride Finish
    $449.99

  • GREAT LAKES FIREARMS 223/5.56MM SEMI-AUTOMATIC AR15 WITH TUNGSTEN CERAKOTE FINISH

    Great Lakes Firearms AR15 223 Wylde Semi-Automatic Rifle with Tungsten Cerakote Finish
    $759.99

  • NEXGEN NG15 223 WYLDE RIFLE PEWTER NITRIDE

    NexGen Arms NG15 223 Wylde Semi-Auto Rifle with Pewter Nitride Finish
    $449.99

  • NEXGEN NG15 223 WYLDE RIFLE BLACK NITRIDE

    NexGen Arms NG15 223 Wylde Semi-Auto Rifle Black Nitride Finish
    $449.99

  • ONE HORSE OH-15 5.56 15` RAIL M-LOK

    One Horse OH-15 5.56 NATO Semi-Automatic Rifle with 16 Inch Socom Barrel and M-LOK Handguard
    $549.99 $499.99

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

    Hornady 5.56 NATO 75 gr BTHP Match Frontier 20/Box
    $12.99
    ($0.65 / round)

  • Hornady 5.56 NATO 62 gr FMJ Frontier 20/Box

    Hornady 5.56 NATO 62 gr FMJ Frontier 20/Box
    $9.79
    ($0.49 / round)

  • Hornady 5.56 NATO 55 gr FMJ (M193) Frontier 20/Box

    Hornady 5.56 NATO 55 gr FMJ (M193) Frontier 20/Box
    $8.99
    ($0.45 / round)

  • X Products M200 5.56 Blanks 50 Round

    X Products M200 5.56 Blanks 50 Round
    $39.99 $24.99
    ($0.50 / round)

  • Hornady 223 Rem 55 gr FMJ Frontier 20/Box

    Hornady 223 Rem 55 gr FMJ Frontier 20/Box
    $8.99
    ($0.45 / round)

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

    PMC 223 Rem 55 gr FMJ BT Bronze 20/Box
    $8.99
    ($0.45 / round)

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

    Hornady 223 Rem 68 gr BTHP Match Frontier 20/Box
    $11.99
    ($0.60 / round)

  • Hornady 223 Rem 55 gr Soft Point Brass Training 50/Box

    Hornady 223 Rem 55 gr Soft Point Brass Training 50/Box
    $24.58
    ($0.49 / round)

  • Hornady 223 Rem 73 gr ELD Match 20/Box

    Hornady 223 Rem 73 gr ELD Match 20/Box
    $19.99
    ($1.00 / round)

  • Federal 223 Rem 55 gr Hollow Point Tactical Rifle Urban Police Trade Ammo 20/Box

    Federal 223 Rem 55 gr Hollow Point Tactical Rifle Urban Police Trade Ammo 20/Box
    $13.99
    ($0.70 / round)

  • Federal 223 Rem 55 gr Bonded SP Tactical Police-Trade Ammo 20/Box

    Federal 223 Rem 55 gr Bonded SP Tactical Police-Trade Ammo 20/Box
    $19.99
    ($1.00 / round)

  • Hornady 223 Rem 55 gr V-MAX Varmint Express 20/Box

    Hornady 223 Rem 55 gr V-MAX Varmint Express 20/Box
    $22.49
    ($1.12 / round)

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

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

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

    Magpul PMAG GEN M3 5.56 NATO 30 Round Black Magazine
    $14.95 $11.99

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

    Magpul PMAG GEN M3 5.56 NATO 20 Round Black Magazine
    $10.99

  • AMEND2 MOD 2 AR-15 5.56 MM 30 RD BLACK MAG

    Amend2 AR15/M4 Mod.2 5.56 NATO 30 Round Magazine (Black)
    $14.99 $6.97

  • MISSION FIRST TACTICAL AR-15 5.56 NATO 30-ROUND MAGAZINE

    Mission First Tactical AR-15 5.56 NATO 30-Round Magazine
    $6.97

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

    Magpul PMAG 40 AR/M4 GEN M3 5.56 NATO 40 Round Magazine
    $21.99

  • ATI SCHMEISSER S60 223/5.56MM 60-ROUND AR-15 MAGAZINE WITH WINDOW (GEN2)

    American Tactical Schmeisser S60 5.56 NATO 60 Round AR-15 Magazine with Window (Gen2)
    $84.95 $24.99

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

    Magpul PMAG GEN M3 5.56 NATO 30 Round Coyote Tan Magazine
    $12.99

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

    Magpul PMAG GEN M3 5.56 NATO 10 Round AR-15 Magazine
    $12.99

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

    Magpul PMAG GEN M3 5.56 NATO 30 Round Black Magazine with Window
    $14.99

  • AMEND2 AR15 30RND 5.56MM MOD-C TRANSLUCENT YELLOW DONT TREAD ON ME MAG

    Amend2 AR15 5.56 NATO 30 Round Factory Magazine Translucent Yellow
    $14.99

  • MAGPUL TMAG 30RND 223RE/5.56 NATO COMPATIBLE W/AR15/ OLIVE DRAB TRANSLUCENT

    Magpul TMAG 30 AR/M4 Gen M3 223/5.56mm 30-Round Translucent OD Magazine
    $23.95 $19.99

Product Description

Built upon the same principles as Eugene Stoner’s original design, CORE15 uses the basic receivers for their AR-15 style rifles, and then expand upon that design by incorporating the many benefits of today’s accessories into their rifles. CORE15 holds each and every receiver to exacting tolerances using state of the art machining processes. By exceeding military standards, CORE15 ensures the best fit possible and can offer a more reliable, smoother functioning, and more accurate weapon that will provide you with the peace of mind that you deserve.

Whether a weekend shooter heading to the range for an afternoon of fun, or professional operator preparing for work, CORE15 Rifle Systems will provide you with the weapon to fit your individual needs.

Firearm Specifications

    • CORE15™ Mil-Spec Forged 7075-T6 Lower Receiver, Type III Class II Hard-coat anodized finish, beveled Magwell for improved reloading speed, machined chevrons in front strap, bullet pictogram safety markings
    • CORE15™ Mil-Spec Forged 7075-T6 M-4 Upper Receiver, Type III Class II Hard-coat anodized finish, M4 Feed Ramps, (1913 Picatinny rail flat top) w/ dry lube internal finish and laser engraved T-markings
    • 16” 4150 CMV Chrome Moly M4 Profile Chrome Lined Barrel 1:7 Twist
    • Chambered in .223/5.56 x 45 mm NATO
    • Direct Gas Impingement Gas System
    • Gas Tube made of 304 grade Stainless Steel
    • Chrome lined 8620 Stainless Steel Bolt Carrier and Bolt Carrier Key
    • Magnetic Particle Inspected (MPI) Carpenter 158® Bolt Assembly
    • A-2 Flash Hider
    • “F” Marked A Frame Front Sight Base (Forged)
    • M4 Style Thermoset molded Polymer Hand Guards with Dual Heat Shields
    • A-2 Pistol Grip
    • CORE15™ Six Position Retractable Stock
    • CORE15™ Hardcore Billet Charging Handle V.1
    • Magpul® 30 rd. PMAG®
    • CORE15™ Owner’s Manual
    • Weight (unloaded): 5.9 lbs.
    • CORE’s NO BS Lifetime Warranty

Customer Comments & Questions

Customer Reviews

Write a review
(5 out of 5) Dressed up
by Tim from Calmar, IA on January 18, 2020

Did a lot of furniture changes on my Core 15 100278. Shot great but wanted some improvements over stock. Optics and handgrips with a Nikon P223 scope first and a Magpul MOE grip second. Butt pad by Limbsaver, and many other small changes just improved the feel. It always fired perfectly. Once scoped in, it is one dependable rifle. Mainly for coyotes and an occasional unlucky woodchuck.

Back to top