Notice:
At this time, we will no longer be able to sell/fulfill orders for any braced pistols. We apologize for the inconvenience.

CORE 15 M4 223/5.56 DIRECT GAS IMPINGEMENT RIFLE

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

Temporarily Out of Stock

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

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  • ATI MILSPORT AR15 223 WYLDE 16 IN BBL 30 RD MAG

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

    PMC 223 Rem 55 gr FMJ BT Bronze 20/Box
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    ($0.40 / round)

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

    Hornady 223 Rem 68 gr BTHP Match Frontier 20/Box
    $11.79
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  • Winchester 223 Rem 55 gr FMJ 20/Box

    Winchester 223 Rem 55 gr FMJ 20/Box
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  • Hornady 5.56mm NATO 62 gr FMJ Black 20/Box

    Hornady 5.56mm NATO 62 gr FMJ Black 20/Box
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  • Hornady 223 Rem 62 gr FMJ Black 20/Box

    Hornady 223 Rem 62 gr FMJ Black 20/Box
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    ($0.64 / round)

  • Winchester 5.56mm M193 55gr FMJ USA Valor Series 125/Box

    Winchester 5.56mm M193 55gr FMJ USA Valor Series 125/Box
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  • Winchester 5.56mm M855 Green Tip 62 gr FMJ Stripper Clip 420 Rounds in Metal Ammo Can

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

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

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    $14.99

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

    Magpul PMAG GEN M3 5.56mm 30-Round Black Magazine
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  • AMEND2 MOD 2 AR-15 5.56 MM 20 RD BLACK MAG

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  • 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
    $19.99

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

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

  • 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
    $19.99

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

    Magpul PMAG GEN M3 5.56mm 20-Round Black Magazine
    $13.99

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

    Magpul PMAG GEN M3 5.56mm 30-Round Coyote Tan Magazine
    $16.99

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

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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

(5 out of 5) Dressed up
by from Calmar, IA on

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.

(5 out of 5) My First AR
by from Dallas, Texas on

Went to the range and shot first first AR out of the box... Great specs with a great price...