CORE15® HARDCORE System X4 Rifle

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This latest addition to the CORE family of quality products includes a multitude of base features and is available in four feature packed systems: HARDCORE X1, X2, X3 and X4. This new rifle system is the result of many hours of research, development and testing across all venues.

CORE’s Lifetime Warranty coupled with other features that are unique to the HARDCORE line. This new rifle product line is chambered in .223/5.56 x 45 mm NATO, has the potential of rivaling other rifles well above its price range.

Features included: CORE Rifle Systems “factory accuracy guarantee” to shoot sub moa, an all-new matching serialized CORE15© Billet Upper and Lower, CORE15© Nickel Boron Bolt Carrier Group, CORE15© Barrel made entirely in-house that starts with premium raw 4150 steel cut to length, drilled, rifled and profiled. The rest is black magic only found in CORE’s barrel processes. Followed up by testing each barrel for quality, accuracy and reliability. This includes a CORE15© Extruded Aluminum Keymod Rail, in-house Cerakote finish as well as many other exciting features.  To round things off, a Boyt HM44 Hardshell Case, MAGPUL® 20 and 30 round magazines, Range Log, Otis Technologies MSR/AR cleaning system and a Frog Lube Tube©.

All firearms are assembled and test fired to ensure the highest of standards in this new all billet platform. We also include a test fire target and a CORE Range Log to track all of your range sessions for the life of this rifle.

MSRP $5599.00
CALIBER Chambered in .223/5.56 x 45 mm NATO
CORE15® HARDCORE Billet Lower machined from solid 7075-T6 Aluminum Alloy, In-House Sniper Grey Cerakote, Lo-Profile, Heavily Beveled and Relieved Mag Well Oversized Integral Trigger Guard, Bullet Pictogram Safety Markings
UPPER RECEIVER CORE15® HARDCORE Billet Upper Machined from solid 7075-T6 Aluminum Alloy, In-House Sniper Grey Cerakote, Serialized to Match with Lower
CORE15® Nickel Boron Coated M16 Chrome Lined 8620 Steel Carrier, Magnetic Particle Inspected Bolt (MPI), Mil-Spec Carpenter 158® Steel Bolt, Chrome Lined Gas Key Hardened to USGI Specs with Grade 8 Hardened Fasteners, Mil-Spec Staked, Tool Steel Extractor Upgrade, Extractor Spring, M16 Profile, Shot Peened
BARREL CORE15® Fluted 18″ Rifle Length / Standard Profile 1:7 5R, 4150 Barrel Black Nitride
GAS BLOCK CORE15® Angled Groove Low Pro Gas Block
BUFFER/SPRING H2 Buffer / Wolff Buffer Spring
CHARGING HANDLE CORE15® Hardcore Scalloped Billet Charging Handle
RAIL SYSTEM CORE15® 15″ Aluminum Keymod Rail, Machined from 6005 Aluminum Alloy, In -House Sniper Grey Cerakote.
Magpul® MBUS® Pro Front & Rear
TRIGGER GROUP CMC Trigger Group Two-Stage
2lb Break /2lb Reset
OPTIC Leupold® MK6 3X18X44 With Mount (#115943)
TRIGGER GUARD Integral Oversized Trigger Guard
STOCK/GRIP Magpul® ACS™ (Adaptable Carbine/Storage), Black Hogue® Rubber Grip
BIPOD Atlas BT10 Bipod 1913 Picatinny Rail Mount 4.75” to 9” Adjustable, 5-Position
MAGAZINE Magpul® Gen3 20 rd. & 30 rd. Magazine
Boyt H44 Compact Rifle/Carbine Case, Otis® MSR/AR Cleaning Kit, Frog Lube® Tube, CORE15® Welcome Kit (Manual, Warranty Registration, CORE15® Stickers, Dog Tags).
HARDCORE DOCUMENTS Certificate of Authenticity
Range Log /Accuracy Guarantee
Verification Target w/ S/N’s
Matching S/N’s for Barrel, Upper & Lower Receiver


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