AR-15 5.56/.223 18" Stainless Steel Spiral Fluted Upper Assembly / Mlok Rail

Product Code:MAR-556-18-SPR-TRI
Availability:In Stock
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  • $299.95

  • $399.95

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AR-15 5.56/.223 18" Stainless Steel Spiral Fluted Upper Assembly / Mlok Rail

The AR-15 5.56/.223 18" Stainless Steel Spiral Fluted Upper Assembly with Mlok rail offers precision and durability for your AR-15 build. This upper assembly is chambered in .223 Wylde, allowing you to fire both 5.56 NATO and .223 Rem rounds. With an 18" spiral-fluted stainless steel barrel, the assembly provides reduced weight, improved rigidity, and superior heat dissipation for consistent performance during rapid fire. The M-Lok handguard offers a versatile mounting platform for accessories like lights, grips, and optics. Whether you’re upgrading an existing build or assembling your dream rifle, this upper assembly is a key component for accuracy and reliability.

Key Features:

  • Caliber: Compatible with 5.56 NATO and .223 Rem rounds, chambered in .223 Wylde.
  • Barrel: 18" 416 stainless steel, spiral-fluted for reduced weight, improved rigidity, and heat dissipation.
  • Muzzle Device: Includes a nitride triport muzzle brake with a 1/2x28 thread and crush washer.
  • Gas System: Mid-length gas system with a .750 low profile gas block for smoother operation and reduced recoil.
  • Handguard: A 12" M-Lok free-floating rail for enhanced mounting options and flexibility.
  • Material: Constructed from 7075-T6 aluminum with a black hardcoat anodized finish for added durability and corrosion resistance.
  • Receiver: A3 flat top upper receiver with M4 feed ramps for easy compatibility with other AR-15 components.

Note: BCG and Charging Handle are not included, available separately. Images may not be an exact representation of the product.

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Tags: ar-15 5.56/.223 18" stainless steel spiral fluted upper assembly / mlok rail ar-15, 18", stainless, steel, spiral, fluted, upper, assembly, mlok, rail, nato, wylde 18"

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