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    Great value on a Mil Spec complete upper receiver with bolt carrier group and a lifetime warranty!

    This CORE15™ complete upper includes an accurate 16" 4150 chrome lined barrel, a chromed bolt carrier group, and a standard M4 handguard with heat shields.

    • 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 Steel Bolt Carrier and Bolt Carrier Key
    • Magnetic Particle Inspected (MPI) Bolt Assembly
    • A-2 Flash Hider
    • M-4 Style Thermoset molded Polymer Hand Guards with Dual Heat Shields
    • A Frame Front Sight Base (Forged)
    • CORE15® NO BS Lifetime Warranty

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