CORE15® M4 Piston Upper


Part Number 100275
MSRP $929.99
Caliber Chambered in 5.56x45mm NATO
Upper Receiver CORE15® Mil-Spec Forged 7075-T6 M4 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
Bolt Assembly Magnetic Particle Inspected (MPI) Carpenter 158® Bolt Assembly
CORE15® Gas Piston Assembly / Adjustable Gas Settings
Gas Block Picatinny flat top Gas Block (optics-ready design
Barrel/Rifling 16” 4150 CMV Chrome lined 1:7 Twist or 416R SS 1:8 Twist M4 Profile Barrel
Flash Hider A-2 Flash Hider
Forearm M4 Style Thermoset molded Polymer Hand Guards with Dual Heat Shields
Owner’s Manual CORE15® Owner’s Manual
Warranty CORE15® NO BS Lifetime Warranty
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