Shark Coast Celtic 556 16" AR-15 Upper Receiver Assembly

(No reviews yet) Write a Review

Description

The Shark Coast Celtic 556 16" upper receiver assembly delivers precision engineering for AR-15 platforms with distinctive Celtic-inspired aesthetics. This complete upper combines reliable 5.56 NATO/.223 Rem performance with premium manufacturing standards for competitive shooting and tactical applications.

What Makes This Different

Unlike standard mil-spec uppers, the Celtic features precision-machined Celtic knotwork engravings that maintain structural integrity while providing enhanced grip surfaces. The 16-inch barrel length optimizes velocity retention for 5.56 NATO rounds while meeting legal requirements in all states. Cold hammer-forged construction ensures consistent accuracy with match-grade tolerances throughout the barrel profile.

Key Features

16-inch cold hammer-forged barrel with 1:7 twist rate for heavy projectiles
Mil-spec M4 feed ramps and chrome-lined chamber for reliable feeding
Celtic knotwork machining provides tactical grip enhancement
Standard carbine gas system with low-profile gas block
Picatinny rail system compatible with standard optics and accessories
5.56 NATO/.223 Remington chamber accepts both cartridge types
Phosphate finish resists corrosion in harsh environments

Field testing demonstrates consistent sub-2 MOA accuracy with quality ammunition across various weather conditions. The carbine-length gas system cycles reliably with both brass and steel-cased ammunition while reducing felt recoil compared to shorter gas systems. Law enforcement and competitive shooters report excellent performance in high-round-count scenarios without accuracy degradation.

Technical Specs

Barrel Length: 16 inches
Caliber: 5.56 NATO/.223 Remington
Twist Rate: 1:7 inches
Gas System: Carbine length
Thread Pitch: 1/2x28 TPI
Overall Length: Approximately 20.75 inches
Weight: 2.8-3.2 pounds (estimated)
Finish: Phosphate coating
Compatibility: Standard AR-15 lower receivers

The Celtic upper receiver assembly represents proven AR-15 engineering enhanced with distinctive aesthetic details that don't compromise function. Professional gunsmiths appreciate the quality control standards and precise tolerances that ensure drop-in compatibility with quality lower receivers.