Tuner EC (Erik Cortina) for small calibre rifle with Warrior 1/2x20 max .22 cal muzzle brake

WARRIOR 4-Port Rimfire EC Tuner Brake (.22 LR)

The ECM001 - WARRIOR 4-Port Rimfire EC Tuner Brake is a modern solution for small caliber shooters who want to take the accuracy of their .22 LR rifle to the next level while getting the benefits of a sophisticated muzzle brake. This model combines two features in one compact body: an effective, safely designed muzzle brake and an integrated barrel tuner for fine tuning the barrel's behavior when fired. The result is a system that simplifies the handling of factory rimfire ammunition, improves shot consistency and adds practical benefits for everyday use at the range and in competition.

The WARRIOR 4-Port Rimfire EC Tuner Brake is designed with the typical WARRIOR muscle philosophy: functional, rugged, easy to use, and at the same time thoughtfully detailed to protect the muzzle and improve long-term performance stability. From a design point of view, it is based on the very effective EC Tuner concept, developed by Eric Cortina. Gun Warrior developed this concept for rimfire use and added forward-facing ports that directly affect the safety and clarity of the barrel crown.

Why a rimfire EC tuner makes sense and where common adjustments end

With the .22 LR, the shooter is often limited by the fact that he cannot tune the performance by reloading, as is the case with large-caliber cartridges. Accuracy is therefore heavily dependent on a combination of the barrel, the particular batch of ammunition, temperature conditions, and barrel vibration during firing. Yet rimfire shooting in particular tends to be extremely sensitive: a small difference in velocity, bullet lubrication, case hardness, or powder burn will affect vertical and group size more than many shooters realize.

ECM001 solves this problem practically. It allows fine mechanical tuning of the weapon to bring the barrel behaviour closer to the ideal condition for the ammunition, without the need to permanently modify the weapon. This is especially important in competition disciplines where the shooter does not want to change the loading or rebuild the gun in a complicated way, but still needs maximum consistency.

Impact brake and barrel tuner in one compact body

WARRIOR 4-Port Rimfire EC Tuner Brake combines:

• a stretch brake with forward-oriented ports

• integrated barrel tuner for tuning harmonic oscillations of the barrel

This combination is unique because rimfire guns usually come with either a pure tuner or a simple stretch device. The ECM001 offers both, with a clear goal: to improve accuracy while increasing safety and long-term performance stability.

Forward-facing ports: safety, comfort and less carbon on the crown

One of the main design features of the ECM001 is the forward-facing ports. In terms of user benefit, this means several important things:

• the direction of noise and fumes is pushed more forward, i.e. away from the shooter

• comfort during shooting increases (especially on closed ranges or when shooting from different positions)

• reduces the amount of residue and carbon that returns to the barrel crown

• reduces the risk of uneven deposition on the crowns, which can affect consistency in the long term

The crown is a critical point in precision shooting. The .22 LR is often fired in high numbers of shots during practice and competition, and muzzle clogging can affect dispersion sooner than the shooter expects. The ECM001 design is designed to minimize this effect and protect the most sensitive area of the barrel.

What are harmonic oscillations mainly and why they determine the result

When fired, the barrel does not behave like a solid rod. It is a flexible system that oscillates as a result of the impulse of the shot. This creates harmonic oscillations of the barrel: the barrel deflects and oscillates in several directions at the same time, even in a small calibre weapon. This movement is microscopic but essential for accuracy.

The moment when the bullet leaves the muzzle is crucial. If the projectile leaves in a phase when the muzzle is moving or in a less stable part of the rhythm, this will result in a greater dispersion (typically vertical). If, on the other hand, the bullet leaves the barrel at a more stable, repeatable point in the rhythm, the group of hits is smaller and the results are more consistent.

The barrel tuner works by adding and shifting mass at the muzzle to change the frequency and phase of the barrel oscillation. It's not about magic or marketing. It's pure physics: a slight change in mass distribution and moment of inertia shifts the barrel's firing behavior. In rimfire, this effect is often very observable because the projectile is relatively slow and the barrel has more time to "work" as the projectile passes through.

The result of a correct tuning is usually:

• less vertical dispersion

• better group in 50 m and 100 m

• higher resistance to minor changes in ammunition batch

• better repeatability between training and competition

Eric Cortina: why the author of the EC concept is relevant

Eric Cortina is a renowned American precision shooter, designer and trainer. He is known for building on practical testing, understanding of ballistics and realistic gun behavior when fired. His EC Tuner concept originated as a tool developed from competition practice: trying to get the most out of a particular barrel and a particular ammunition without the need for interventions that would be permanent or expensive.

It is the origin of the solution that is important: it is not just an accessory for a gun. It's a functional system designed to help the shooter understand and control the variables that affect accuracy. That's why the EC Tuner principle is used and licensed across segments, from large-caliber precision rifles to rimfire.

Gun Warrior (Britplast cc): background that makes sense even with rimfire

Gun Warrior, formally Britplast cc, is a South African manufacturer known for not focusing on "ordinary" accessories, but on truly powerful solutions for shooters. The company manufactures custom guns, chassis systems and precision shooting components, including solutions for large calibre and ELR applications. Their portfolio includes products used by top level competitors, including extreme long range shooting competitions.

This background is important. It means that even a rimfire product like the ECM001 is created in a company that understands what stability, repeatability, durability and real benefit means in a competitive environment. "WARRIOR muscle" in a rimfire context is not about exaggerated size, but about functional design: a durable solution that protects the crown, performs consistently and remains stable even at high shot counts.

Who the ECM001 is ideal for

The ECM001 is particularly suitable for shooters who:

• shoots .22 LR competitively or very regularly

• tuning factory ammunition and want to find the best "sweet spot"

• addresses vertical dispersion and consistency at 50-100 m

• want the benefits of forward ports and a cleaner barrel crown at the same time

• competing in PRS Rimfire, NRL22 or similar formats

Recommended use

• PRS Rimfire, NRL22 and other rimfire competitions

• precision shooting training

• tuning of factory rimfire ammunition

• situations where comfort and safety are important (forward ports)

Technical parameters

Summary

The ECM001 - WARRIOR 4-Port Rimfire EC Tuner Brake is a high-end rimfire device that combines a forward-port stretch brake with an integrated EC tuner for tuning barrel harmonics. It allows you to improve hit consistency and reduce dispersion when using factory .22 LR ammunition, while increasing shooting comfort and helping to keep the crown cleaner even at high shot counts. Combining Eric Cortina's EC philosophy with a practical "WARRIOR muscle" design, this is a product for shooters who want measurable results, not just an add-on barrel.