Does a Suppressor Change Point of Impact?

The short answer is yes – suppressors typically do cause some degree of point of impact (POI) shift when attached to a firearm.

However, the extent of this shift varies significantly depending on numerous factors, including suppressor design, mounting system, barrel harmonics, and ammunition type. Understanding these variables helps shooters make informed decisions about suppressor selection and prepare for necessary sight adjustments.

Understanding Point of Impact Shift

Point of impact shift occurs when a bullet strikes a different location on the target compared to where the rifle was previously zeroed without the suppressor. This phenomenon happens because adding a suppressor fundamentally changes the rifle’s dynamics. The additional weight at the muzzle alters barrel harmonics, while the suppressor’s internal design affects gas flow and pressure dynamics as the bullet exits.

Most suppressors cause a downward and slightly lateral point of impact (POI) shift to the left. It’s not uncommon at all to see a shift of 2 MOA (i.e. 2″ at 100 yards) – but still see an improvement in accuracy (your group sizes shrink). The downward component results from the added weight at the muzzle end, causing the barrel to droop slightly and altering how the barrel flexes during firing. The lateral shift often depends on how the suppressor threads onto the barrel and any slight misalignment in the mounting system.

Factors Affecting POI Shift

Several key factors determine how much the POI shifts when mounting a suppressor. Barrel length plays an important role – shorter barrels typically experience more dramatic shifts because they’re more sensitive to added muzzle weight. Longer, heavier barrels tend to be more stable and exhibit less point of impact (POI) change. However, longer thin-profile barrels can also be more sensitive to added muzzle weight.

The suppressor’s weight and length also impact shift magnitude. Heavier suppressors create more barrel droop, while longer suppressors extend the weight further from the receiver, amplifying the leverage effect. However, some longer suppressors are designed with lightweight materials that minimize this issue.

The precision of the mounting system directly affects both the magnitude and consistency of the POI shift. High-quality, quick-detach systems with tight tolerances provide repeatable mounting, ensuring the point of impact (POI) shift remains consistent each time the suppressor is attached. Poor mounting systems may produce different shifts with each installation.

Barrel harmonics represent another factor. Every barrel vibrates in a specific pattern when fired, and adding a suppressor changes this harmonic frequency. Many suppressors actually improve rifle accuracy by dampening harmful vibrations, while others might negatively affect precision if they create unfavorable harmonic interactions.

Popular Suppressors and Their POI Characteristics

The SureFire SOCOM556-RC2 stands as one of the most popular rifle suppressors available through Silencer Shop, particularly among military and law enforcement users. This suppressor typically produces a predictable downward point of impact (POI) shift of 1-3 inches at 100 yards, depending on the host weapon. Its quick-detach mounting system provides excellent repeatability, meaning the POI shift remains consistent across multiple mounting cycles. The RC2’s robust construction and proven reliability make it a favorite despite the moderate POI shift.

Dead Air’s Sandman-S represents another top choice among shooters seeking versatility and performance. This suppressor generally causes a 2-4 inch downward shift at 100 yards, with minimal lateral deviation when properly mounted. The Sandman-S features Dead Air’s KeyMo mounting system, which provides secure attachment and good repeatability. Its modular design allows users to swap end caps for different calibers, although each configuration may produce slightly different point of impact (POI) shifts.

For precision rifle applications, the Thunderbeast G2 Ultra 7 stands out as a lightweight option that minimizes POI shift. Weighing only 11.2 ounces, this titanium suppressor typically produces less than 1 inch of point of impact (POI) shift at 100 yards. Its direct-thread mounting system provides exceptional concentricity, and the reduced weight means less impact on barrel harmonics. Many precision shooters choose the Ultra 7 specifically to minimize accuracy disruption.

Minimizing and Managing POI Shift

Several strategies help shooters manage point of impact (POI) shift effectively. First, choose a high-quality mounting system with tight tolerances. Quick-detach systems provide the most consistent mounting. Direct-thread suppressors can offer excellent concentricity but require careful installation to avoid cross-threading.

Consider the suppressor’s weight and your intended use. For precision applications where minimal point of impact (POI) shift is crucial, lightweight suppressors like the Thunderbeast Ultra series or SilencerCo Harvester provide excellent performance with reduced impact on barrel dynamics. For tactical applications where durability is more important than minimal point of impact (POI) shift, robust options like the SureFire SOCOM series deliver proven reliability.

Proper installation technique significantly affects results. Ensure threads are clean and undamaged before mounting. Apply the appropriate thread locker as specified by the manufacturer. Also, make sure that your suppressor is properly aligned on the threads of your barrel. Any cant or cross-threading that leads to improper alignment, no matter how slight, will impact your accuracy and point of impact (POI). For quick-detach systems, verify the suppressor locks securely and consistently with each installation.

Adjusting for POI Shift

Once you’ve determined your suppressor’s POI shift pattern, adjustment becomes straightforward. Most modern scopes offer enough adjustment range to compensate for typical suppressor-induced shifts. If your scope lacks sufficient adjustment range, consider adjustable bases or rings to provide additional correction capability.

Many shooters maintain separate zeros for suppressed and unsuppressed shooting. This approach works well for those who regularly shoot both configurations. Others prefer to zero with the suppressor attached and accept the point of impact (POI) difference when shooting unsuppressed, as suppressed shooting is often the primary use case.

For hunters and precision shooters, consistency is key. Once you establish a reliable POI shift pattern with your specific suppressor and rifle combination, the shift becomes entirely predictable and manageable. Quality suppressors from established manufacturers provide the consistency needed for serious shooting applications.

Conclusion

While suppressors do alter the point of impact, this shift is manageable and predictable with high-quality equipment. The benefits of sound suppression – including hearing protection, reduced recoil, and improved shooting comfort – typically outweigh the minor inconvenience of POI adjustment. By understanding the factors that influence point of impact (POI) shift and choosing suppressors with proven track records for consistency, shooters can enjoy the advantages of suppressed shooting without compromising accuracy.

Ultimately, the initial POI shift isn’t a significant issue in most cases.  As we already mentioned, just put on the suppressor and re-zero you’re weapon. For volume shooters, any modern locking system will be sufficient; however, if you’re a precision shooter, we recommend sticking with either a direct-thread model or a locking quick-attach that uses a compression mount or a tooth mount with smaller teeth.