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We are experiencing a large increase in orders. Non-firearm orders are estimated to ship within 7 business days after the order is placed. Firearm orders will require more time. We apologize for any inconvenience. We are working to process and ship each order as quickly as possible.

If you would like to request a cancellation of your order, you may do so by visiting your Order History page, and selecting the order you would like to cancel. Due to the high demand and limited supply of certain items, we have temporarily suspended dealer sales in order to service as many of our own customers as possible.

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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  • Tula Ammo 223 Rem 55 gr FMJ Steel Case 20/Box

    Tula Ammo 223 Rem 55 gr FMJ Steel Case 20/Box
    $14.99
    ($0.75 / round)

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    $19.99

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

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

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