The Core15 M4 Piston AR-15 chambered in 5.56 NATO is yet another great rifle from the CORE Rifle Systems is another excellent firearm manufacturer based in the state of Flordia designing and manufacturing some of the best examples of firearms while incorporating American Pride and Ingenuity into each design. CORE Rifle Systems uses state of the art manufacturing processes, milling machines and only the highest quality components to ensure you have a firearm that will shoot accurately in any environment. "Where mil-spec is just the starting point" is the guiding principal at CORE15, and from the reviews by shooters CORE15 is one of the best.

Specifications and Features:
CORE15 M4 Piston AR-15 Semi Auto Rifle 100279
5.56mm NATO (accepts .223 Remington)
CORE15 Gas piston driven assembly
Adjustable gas settings
16" 4150 Chrome-moly vanadium M4 Profile Barrel
1:8" Twist
Carpenter 158 bolt assembly
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) with dry lube internal finish
A-2 Flash Hider
Flat top gas block
M4 Style Thermoset molded Polymer Hand Guards with dual heat shields
A-2 Pistol Grip
CORE15 Six Position Retractable Stock
CORE15 Owner's Manual
Weight (unloaded): 6.7 lbs.
CORE's Lifetime Warranty
Black