Explore the Design

ROC Series Design Philosophy

The ROC series of suppressors is engineered to meet the most demanding mission requirements for duty use. Consistent performance under high rates of fire is critical, and every design decision prioritizes reliability, durability, and signature reduction.

Reliability

Reliability is the highest performance priority. A suppressor must function without negatively impacting the operation of the host weapon while maintaining consistent performance across a wide range of firing conditions.

Equally important is the reduction of overall blast signature to levels that allow operators to retain command and control, situational awareness, maneuverability, and stowability. Achieving this starts with a foundation of materials capable of withstanding heavy use and repeated thermal cycling without long-term degradation.

Low Backpressure

At the core of the ROC suppressor is the Linear Diffuser Array. This design significantly reduces backpressure by eliminating “deadhead” channels and the acute geometries commonly found in traditional baffle designs.

Suppressors that rely on cones or sharp-angle systems often generate increased backpressure and permanently trap lead and copper debris, which fouls the unit and reduces effectiveness over time. These designs can also suffer from gas stacking during rapid firing, further increasing backpressure and negatively impacting weapon function.

Maintenance-Free Operation

While many manufacturers rely on DMLS 3D printing for its production efficiencies, it is not a universal solution. The inherently porous interior surfaces of 3D-printed suppressors tend to trap copper, lead, and carbon fouling, reducing performance and contributing to gradual weight gain over extended use.

The ROC family features exceptionally smooth internal surfaces that are heat treated to resist fouling and weight gain. Combined with optimized internal geometry and carefully selected materials, this results in a suppressor that delivers consistent signature reduction over many thousands of rounds—without requiring cleaning or maintenance.

Low Point of Impact Shift

The bore of the Linear Diffuser Array is fully contiguous, ensuring the projectile’s flight path is not influenced by adjacent edges or bulkheads commonly found in cone, monolithic core, or disruptive baffle designs.

By prioritizing controlled gas distribution rather than aggressive gas disruption at the bore, the ROC suppressor achieves negligible point-of-impact shift.

Proprietary Bonding Process

Siege ROC suppressors are not 3D printed. Instead, they are manufactured using a proprietary bonding process that enables the creation of smooth, highly effective internal geometries.

This process allows the combination of multiple refractory metals, leveraging the optimal physical properties of each for corrosion resistance, erosion resistance, heat tolerance, and repeated thermal cycling. Unlike conventional welding, the resulting bond is stronger and more ductile than the base metals themselves, producing an exceptionally durable, long-lasting suppressor built for sustained duty use.