no rear sight C-15 M4 in 5.56mm NATO, Core 15 part number 100278
The Core 15 100278 C-15 M4 Rifle 5.56mm 16in 30rd Black
From the manufacturer
Action - Semi-automatic
Type of Barrel - 1:7 5R Chrome Lined
Barrel Length - 16"
Chamber - Carbine
Chokes - A2
Capacity - 30Rd
Finish/Color - Black
Caliber - 223 Rem
Caliber - 556NATO
Grips/Stock - 6 Position
Manufacturer - CORE
Manufacturer part # - 100278
Model - M4
Sights - Front Sight Base
Type - AR

no rear sight you can buy sights from $30.00 and up C-15 M4 in 5.56mm NATO, Core 15 part number 100278 The Core 15 100278 C-15 M4 Rifle 5.56mm 16in 30rd Black From the manufacturer Action - Semi-automatic Type of Barrel - 1:7 5R Chrome Lined Barrel Length - 16" Chamber - Carbine Chokes - A2 Capacity - 30Rd Finish/Color - Black Caliber - 223 Rem Caliber - 556NATO Grips/Stock - 6 Position Manufacturer - CORE Manufacturer part # - 100278 Model - M4 Sights - Front Sight Base Type - AR

No "rear sight" comes from the factory on this rifle. It would definitely be welcomed, but not in this case Harry.

Just the Marked A Frame Front Sight Base

Hi Harry, No it does not. Here's the Specs - The CORE15 M4 Semi Automatic Rifle is an outstanding choice for duty, defense, and competitive shooting. This is an excellent AR-15 that is packed with features including a chrome lined barrel, Bolt Carrier and Bolt Carrier Key, Billet Charging Handle, and MPI Inspected Carpenter 158 Blot Assembly for excellent longevity and durability. CORE15 is driven by their motto: "Where Mil Spec is Just the Starting Point" and their base level CORE15 M4 Semi Automatic Rifle is an excellent representation of what a small American Owned and Operated Firearm Manufacturer can do.
Specifications and Features:
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) with dry lube internal finish and laser engraved T-markings
16" 4150 CMV Chrome Moly M4 Profile Chrome Lined Barrel
5.56 NATO caliber (accepts .223 Remington)
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 G