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AR-15 5.56 NATO 16" Rifle Kit | Slick Side | 10" Quad Rail | LE Stock
Build a classic, versatile AR-15 rifle configuration with this Moriarti 5.56 NATO 16" AR-15 rifle kit. The kit combines a 16" 4150 CMV barrel, forged slick-side upper receiver, 10" free-float quad rail, M16 bolt carrier group, Mil-Spec lower parts kit, and adjustable M4 LE-style stock system.
Designed as a coordinated component package, this kit includes the listed components for completing a compatible AR-15 configuration. Lower receiver is not included.
Color options are available at the top of the page. Applicable components are Cerakoted in your selected color.
16" 5.56 NATO Barrel
The kit is built around a 16" 5.56 NATO barrel manufactured from durable 4150 Chrome Moly Vanadium steel and treated with a nitride finish for increased surface durability and corrosion resistance.
Barrel Specifications:
- Caliber / Chamber: 5.56 NATO
- Barrel Length: 16"
- Material: 4150 CMV
- Finish: Nitride
- Twist Rate: 1:7 or 1:8 depending on availability
- Gas System: Carbine Length
- Gas Block Journal: .750"
- Muzzle Thread: 1/2x28
- Muzzle Device: A2-Style Flash Hider
10" Free-Float Quad Rail
The 10" aluminum free-float quad rail provides four-sided accessory-mounting space while maintaining the classic tactical appearance of a quad-rail AR-15.
Because the handguard does not make direct contact with the barrel along its length, the free-float configuration minimizes handguard pressure on the barrel.
The handguard is Cerakoted in your selected color where applicable.
Forged Slick-Side Upper Receiver
The upper features a precision-machined 7075-T6 forged M4 flat-top receiver with a streamlined slick-side configuration.
- 7075-T6 forged aluminum
- M4 flat-top design
- Slick-side configuration
- No forward assist
- Ejection port cover
- Optics-ready top rail
- Selected components Cerakoted according to chosen color
M16 5.56/.223 Bolt Carrier Group
Includes a complete M16-cut 5.56/.223 bolt carrier group designed for the listed AR-15 configuration.
- 8620 steel carrier
- Chrome-lined carrier
- 9310 steel bolt
- MPI tested
- Complete bolt assembly
- Cam pin
- Firing pin
- Firing pin retaining pin
AR-15 Charging Handle
An AR-15 tactical charging handle is included and Cerakoted to coordinate with the selected color configuration where applicable.
Mil-Spec AR-15 Lower Parts Kit
Includes a DPMS-style Mil-Spec AR-15 lower parts kit containing the listed components for use with a compatible stripped AR-15 lower receiver.
Lower receiver is not included.
M4 LE Adjustable Stock & Buffer System
The rifle kit includes an M4 LE-style 6-position adjustable stock with a complete Mil-Spec buffer system.
Included:
- M4 LE-style adjustable stock
- 6-position Mil-Spec buffer tube
- AR-15 buffer
- Buffer spring
- Required buffer-system components
Kit Highlights
5.56 NATO | 16" Barrel | 4150 CMV | 1:7 or 1:8 Twist | Carbine-Length Gas | .750" Gas Block Journal | 1/2x28 Threads | Nitride Finish | Forged Slick-Side Upper | 10" Free-Float Quad Rail | M16 5.56/.223 BCG | Mil-Spec Lower Parts Kit | M4 LE Adjustable Stock | Color Options Available
Why is a 16-inch barrel so popular for a 5.56 AR-15 rifle?
A 16-inch barrel is one of the most popular lengths for 5.56 NATO AR-15 rifles because it offers a practical balance of overall size, handling, and ballistic performance. It is widely used for general-purpose AR-15 configurations and provides more barrel length than compact pistol configurations without requiring the overall length of an 18" or 20" barrel. Actual velocity and performance vary with ammunition, barrel specifications, and environmental conditions.
Important Product Information
This 5.56 NATO AR-15 rifle kit comes unassembled and includes the components shown and listed for the selected configuration.
Lower receiver is not included.
The barrel may be supplied with a 1:7 or 1:8 twist rate depending on current inventory.
Product images are representative and may not exactly depict the final product. Appearance and individual components may vary according to selected configuration, color, and component availability.
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