PFM Devices, LLC
The Sound of Science TM
Explore our advanced firearm suppressors designed using state-of-the-art analysis that has resulted in the lowest sound signature available while reducing audible risk units (ARUs) as assessed using the US Army's Auditory Hazard Assessment Algorithm for Humans (AHAAH). Get a PFM can and hear the "Sound of Science".
Our Products
PFM Devices has ready to ship our Merlin model full-size and reduced-size suppressors for 30 cal rifles. These cans are ideal for the recreational shooter and sportsman. They are rated for semi-auto and are being currently assessed for full auto. More calibers are on the way as well as our next model, the Spectre. Get a PFM can and hear the "Sound of Science".
Merlin
Full-length Model
Merlin - K
Short Model Coming Soon
Spectre
Coming Soon
Our Process
PFM Applies the latest in simulation and analysis techniques to better understand the physics as to what is affecting the sound signature of the suppressor. Using our proprietary simulation tools, we can investigate the fluid dynamics processes much better than what can be done with just pressure measurements during testing. This greatly reduces the prototyping process as well as highlights the real cause of the sound signature and how to improve performance. Just a hint, it is not by "cooling the gas". In fact, the gas is totally ejected in about 50 ms. It is simply not possible to cool the gas that quickly. Download the PDF of our recent conference presentation and learn more about our patented technology. Get a PFM can and hear the "Sound of Science".
Example Simulation
Field Testing
Assessing Suppressor Performance Using Auditory Risk Units (ARUs)
NDIA Future Force Capabilities Conference
Fort Worth, TX
30 Sept-3 Oct 2025
Our Performance
PFM Devices specializes in applying scientific analysis to optimize the design of our suppressors. Our patented technology produces the best sound reduction available while minimizing risk to the shooters hearing. Shown here is test data highlighting our Merlin's performance and compares it to other popular suppressors. Below shows the Merlin signature compared to other popular suppressors on the market. Our patented design also minimizes the backflow of gas. Get a PFM can and hear the "Sound of Science".
Merlin signature measured at Mil Std location of 1 meter, compared to HUXWRX FLOW 556Ti
Merlin signature measured at Mil Std location of 1 meter, compared to HUXWRX FLOW 556Ti
Merlin Performance compared to other popular suppressors.
Merlin Performance compared to other popular suppressors (AR-15, using 223 Rem, 55 grain, FMJ)
Data for suppressors other than PFM's is taken from the site https://thunderbeastarms.com/sound/consolidated/ which is a set of publicly available test data