AR-15 5.56/.223 Wylde 18" HBAR UPPER ASSEMBLY / QUADRAIL

5.56 NATO/.223 Wylde

AR-15 5.56/.223 Wylde 18" HBAR UPPER ASSEMBLY / QUADRAIL

An AR-15 5.56/.223 Wylde 18-inch stainless steel upper assembly with a quadrail handguard represents a configuration of the upper part of an AR-15 rifle that is designed to be versatile, accurate, and capable of handling high volumes of fire. Each component carries specific implications for the performance and application of the firearm:

1. **AR-15**: originally designed by ArmaLite and later popularized by various manufacturers. The AR-15 is a lightweight, magazine-fed, gas-operated, air-cooled, semi-automatic or fully automatic shoulder-fired weapon. It's important to note that AR stands for ArmaLite Rifle, not assault rifle or automatic rifle.

2. **5.56/.223 Wylde**: The .223 Wylde chamber is designed to exploit the accuracy advantages of both .223 Remington and 5.56 NATO ammunition. .223 Remington is a civilian round with slightly lower pressure compared to the 5.56 NATO, a military round that requires a chamber capable of handling higher pressures. The .223 Wylde chamber allows the shooter to safely fire both types of ammunition with a slight accuracy improvement, especially at longer distances.

3. **18-inch stainless steel barrel**:  An 18-inch barrel length is considered a mid to long-range option, balancing velocity, accuracy, and handling. Stainless steel is known for its resistance to corrosion and ability to maintain precision over high volumes of fire, although it may not dissipate heat as efficiently as other materials like chrome-molybdenum steel.

4. **Quadrail handguard**: A quadrail handguard is equipped with four Picatinny rails running along the top, bottom, and sides. This setup allows for the attachment of various accessories such as sights, lights, lasers, forward grips, and more. The design enhances the modularity and versatility of the firearm, enabling the user to customize the rifle for specific needs or preferences.

Specifications:

Barrel - 18" heavy barrel. Chambered in .223 Wylde, 1:8* twist. Nitride coated. .750 diameter under gas block. Mid length gas system. Threaded for a muzzle brake. 1/2x28 pitch. Finished off with our A2 birdcage and a crush washer in nitride. M4 feedramps. 

A3 flat top upper receiver - Moriarti's forged upper receiver, made from certified 7075-T6 aluminum forgings. Black hardcoat anodized to gov.specs. Forward assist and dust cover installed. M4 feedramps.

Gas system - .750 low profile gas block made from aircraft quality aluminum and black hardcoat anodized. Mid length gas tube.

Handguards - 12" free floating quad rail handguard. Made from aircraft quality aluminum and black hardcoat anodized. May vary from stock photo in design. The same excellent quality.

Upper does not come with BCG and Charging Handle. Add-on options available on top of this page. Images may not be an exact representation of the product.