AR-15 5.56/.223 16" Stainless Steel Premium Quad Rail Upper – .223 Wylde, 1:8 Twist
| Brand: | Moriarti Armaments |
| Product Code: | MA15-556-16-QUAD |
| Availability: | In Stock |
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$199.95
- $399.95
16" 5.56 Upper: Specs & Features
Upgrade your AR-15 with Moriarti's 16” Stainless Steel Premium Quad Upper, designed for performance, durability, and tactical versatility. This upper features a 16" M4 contour barrel made from 416R cold-rolled stainless steel and chambered in .223 Wylde, offering superior precision with both .223 Remington and 5.56 NATO ammo.
The 10” free-float quad rail handguard provides robust accessory mounting capability while keeping your barrel free-floating for improved accuracy. Includes a carbine-length gas system, A2 birdcage muzzle device, and .750 gas block journal—assembled on a 7075-T6 aluminum A3 flat-top upper receiver with forward assist and dust cover.
Specifications:
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Caliber: .223 Wylde (compatible with 5.56 NATO & .223 Rem)
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Barrel Length: 16" M4 Contour
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Barrel Material: 416R Stainless Steel, Cold Rolled
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Twist Rate: 1:8 Button Rifled
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Gas System: Carbine-Length
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Gas Block Diameter: .750
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Muzzle Thread: 1/2x28 with A2 Flash Hider (Nitride)
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Handguard: 10” Free Float Quad Rail – Mid-Length
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Upper Receiver: A3 Flat-Top, 7075-T6 Forged Aluminum, Hardcoat Anodized, M4 Feed Ramps
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Includes: Forward Assist and Dust Cover
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Excludes: BCG and Charging Handle (Sold Separately)
Test-fired for reliability and performance. Ready to drop into your complete lower. Images may not be the exact representation of the product.
FAQ
Will this upper fit my AR-15 lower?
Yes. It fits any standard mil-spec AR-15 lower receiver and uses a standard 5.56 bolt carrier group and STANAG/AR-15 magazines.
What is a .223 Wylde chamber?
A hybrid chamber that safely fires both 5.56 NATO and .223 Remington while giving the tighter accuracy of a .223-style throat.
Is a bolt carrier group included?
No. The bolt carrier group is sold separately; any standard 5.56 AR-15 BCG will work.
What twist rate does it use?
A 1:8 twist, a versatile rate for 55 gr to 77 gr bullets.
Related: 5.56 NATO & .223 Wylde AR-15 uppers
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Tags: 5.56 upper, ar-15 upper, 223 wylde upper, 16 inch 5.56 upper, quad rail, stainless barrel