Shark Coast Viking 5.56 NATO 16" AR-15 Upper Receiver Assembly

(No reviews yet) Write a Review

Description

The Shark Coast Viking 16" upper receiver assembly delivers reliable 5.56 NATO performance in a complete, ready-to-install package. This upper combines mil-spec construction with enhanced features that exceed standard carbine-length configurations.

What Makes This Different

The Viking upper features a mid-length gas system that reduces felt recoil and improves cycling reliability compared to carbine-length systems. The 16" barrel profile balances accuracy potential with maneuverability, while the enhanced bolt carrier group provides consistent lockup and extraction. Chrome-lined chamber and bore extend service life beyond standard phosphate treatments.

Key Features

16" chrome-lined barrel with 1:7 twist rate for heavy bullet stabilization
Mid-length gas system reduces port pressure and improves reliability
M4 feed ramps machined into barrel extension for enhanced feeding
Mil-spec upper receiver with M4 flat-top design and T-markings
Enhanced bolt carrier group with properly staked gas key
A2 flash hider reduces muzzle flash and protects crown
Compatible with all mil-spec AR-15 lower receivers

Field performance demonstrates consistent 2-3 MOA accuracy with quality ammunition, making this upper suitable for patrol rifle applications, competitive shooting, and recreational use. The mid-length gas system cycles both 55-grain and 77-grain projectiles reliably, while the chrome lining resists corrosion in adverse weather conditions. The standard carbine handguard accepts most drop-in accessories without modification.

Technical Specs

Caliber: 5.56 NATO/.223 Remington
Barrel Length: 16 inches
Twist Rate: 1:7 right-hand twist
Gas System: Mid-length
Upper Receiver: Forged 7075-T6 aluminum
Barrel Material: Chrome-lined steel
Overall Length: Approximately 20 inches
Weight: Approximately 3.2 pounds
Thread Pitch: 1/2x28 TPI

This complete upper assembly arrives headspaced and test-fired, eliminating the guesswork of component matching. The Viking represents proven AR-15 engineering without unnecessary complications, delivering the performance standards that tactical users and sport shooters expect from a quality platform.