SOF OPERATOR 5.56K QD 5.56MM

The SOF Operator 556K is a compact, mission-ready suppressor engineered for hard-use 5.56 NATO carbines and assault rifles. Built from aerospace-grade IN718 Inconel using advanced 3D metallurgical additive manufacturing, the 556K delivers exceptional durability, flash reduction, and sound suppression while maintaining a compact footprint ideal for duty rifles, SBRs, and professional applications.

Measuring only 5.20 inches in overall length and weighing just 15 ounces, the 556K minimizes added length without sacrificing the ruggedness required for demanding firing schedules. Its advanced suppressor design reduces muzzle flash, recoil, and blast while preserving the maneuverability needed for close-quarters operations, patrol rifles, and tactical use.

Constructed to withstand the extreme temperatures generated by sustained automatic fire, the SOF Operator 556K is full-auto rated and features SOF Operator's durable NANO G protective coating for outstanding resistance to heat, corrosion, and wear. The suppressor utilizes the AI Nano Quick-Detach mounting system with a 1x16 LH interface, providing fast, secure attachment and repeatable return-to-zero performance.

Designed with unrestricted barrel length compatibility and capable of handling projectile velocities up to 3,300 FPS, the 556K is engineered to endure three consecutive 30-round magazines fired at a one-second cadence before reaching its thermal threshold. Combined with a recommended 3,000-round cleaning interval and a limited lifetime warranty against manufacturing defects, the SOF Operator 556K is built for shooters who demand uncompromising reliability and combat-proven performance.

Features

• Optimized for 5.56 NATO rifles
• Compact 5.20-inch suppressor
• Rugged IN718 Inconel construction
• Advanced 3D metallurgical additive manufacturing
• Full-auto rated
• AI Nano Quick-Detach mounting system
• 1x16 LH mounting interface
• NANO G protective coating
• Unrestricted minimum barrel length
• Rated for velocities up to 3,300 FPS
• Compact design for SBRs, carbines, and duty rifles
• Recommended 3,000-round cleaning interval
• Limited lifetime warranty against manufacturing defects

Specifications

• Manufacturer: SOF Operator
• Model: 556K
• Caliber: 5.56 NATO
• Suppressor Type: Rifle Suppressor
• Weight: 15 oz.
• Overall Length: 5.20"
• Diameter: 1.60"
• Material: IN718 Inconel
• Manufacturing Process: 3D Metallurgical Additive
• Finish: NANO G Coating
• Mounting System: AI Nano Quick-Detach
• Mount Interface: 1x16 LH AI Nano Muzzle Device
• Minimum Barrel Length: Unrestricted
• Maximum Velocity: 3,300 FPS
• Weapon Category: Assault Rifle
• Rate of Fire: Full Automatic
• Durability: Three 30-round magazines at one-second cadence to thermal threshold
• Cleaning Interval: Every 3,000 Rounds
• Warranty: Limited Lifetime Warranty (Manufacturing Defects)