Product Description The Griffin Armament Dual-Lok 2.25 Flash Suppressor is a precision-engineered muzzle device built for .223/5.56 rifles with a 1/2x28 thread pattern. Machined from heat-treated 17-4 PH stainless steel and finished in Melonite QPQ, this flash hider delivers exceptional corrosion resistance, surface hardness, and long-term durability. At the heart of the design is the proprietary DUAL-LOK quick-detach mounting system, which integrates 60 machined grooves on the muzzle device interface - doubled by the mount&';s two locking positions, phase-shifted by 3 degrees to create 120 effective locking positions. The result is a rock-solid, no-wiggle fit that minimizes point-of-impact shift when transitioning between suppressed and unsuppressed configurations. The high-efficiency 3-prong flash suppressor design provides outstanding flash reduction without ringing or pinging under fire. Anti-resonance flutes and wrench flats further enhance reliability and ease of installation. The unit measures 2.34 inches in overall length with a 1.07-inch diameter, and weighs only 3.3 ounces. It is also pre-drilled to support pinning and welding on 14.5 to 16-inch barrels, making it fully compliant-capable for NFA builds. Product Highlights DUAL-LOK Quick-Detach System: 120 effective locking positions via 60-groove interface phase-shifted by 3 degrees for a rock-solid, repeatable suppressor mount with zero wiggle. High-Performance Flash Suppression: 3-prong design delivers outstanding flash reduction without ringing or pinging, supporting accuracy and stealth in dynamic environments. Premium 17-4 PH Stainless Steel Construction: Heat-treated and finished in Melonite QPQ for superior surface hardness, corrosion resistance, and extended service life. Anti-Resonance and Precision CNC Machined: Anti-resonance flutes and wrench flats provide secure alignment, easy installation, and reliable performance under sustained fire. Pin and Weld Ready: Pre-drilled for pinning and welding on 14.5 to 16-inch barrels, enabling compliant permanent installation when required. Specs Brand: Griffin Armament Manufacturer Part Number (MPN): DL225FH1228 UPC: 689396837812 Caliber: .223 / 5.56 Thread Pattern: 1/2x28 Overall Length: 2.34 inches Diameter: 1.07 inches Weight: 3.3 oz Material: Heat-Treated 17-4 PH Stainless Steel Finish: Melonite QPQ Color: Black Locking Positions: 120 effective (60-groove interface, 3-degree phase shift) Design: 3-Prong Flash Suppressor Pin and Weld Compatible: Yes (pre-drilled for 14.5 to 16-inch barrels) Condition: New Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>