Optimize your 13.7" AR-15 build with the 1/2-28 Extended Flash Hider for .223/5.56 barrels. This precision-machined muzzle device extends overall barrel length to achieve legal compliance while effectively reducing visible muzzle flash during unsuppressed shooting. Key Features Extended A2-style design specifically engineered for 13.7" barrels, bringing overall length to just over 16" when properly pinned and welded 1/2-28 threading compatible with standard .223/5.56 AR platforms Pre-drilled pin hole for straightforward pinning and welding installation Manganese phosphate finish provides durable corrosion resistance and a professional matte appearance Milled wrench flats for secure, easy installation and removal Heat-treated construction ensures long-term strength and reliability under repeated use Benefits for Shooters Whether you're building a compact rifle or seeking better low-light performance, this flash hider addresses common challenges. It minimizes flash signature to help preserve night vision and maintain target acquisition. The extended length supports pin-and-weld configurations that meet overall length requirements without compromising maneuverability. Its rotationally symmetric design requires no timing shims, simplifying setup. Specifications Overall Length: 2.9 inches Weight: 3.3 ounces Threads: 1/2-28 Finish: Manganese Phosphate Compatibility: .223/5.56 and similar cartridges Installation: Pre-drilled for pin and weld; crush washer not included Ideal for tactical, competition, or recreational shooters who value compliance, performance, and quality craftsmanship in their muzzle devices.