The advantages of using a suppressor are reduced noise, recoil, and muzzle flash along with greater hearing protection and improved communication. 

The disadvantages with a suppressor are added cost, increased firearm length and weight, and increased blowback in gas operated firearms.

There are many factors to consider:

• Caliber Rating: A suppressor must be rated for the caliber you intend to shoot. A larger caliber suppressor can often shoot smaller calibers (e.g., a .30-cal suppressor can shoot 5.56mm), but the reverse can cause significant damage and potential harm to you or others.
• Firearm Host: Pistols often require a booster assembly (or Nielson device) for tilt-barrel function. Rifles require durable, high-pressure-rated construction.
• Material/Construction:  Choose a material based on use: Titanium is lighter (good for hunting/bolt action), while Inconel or Stainless Steel are more durable for high-volume or full-auto fire.
• Mount Type: There are generally two ways to attach your suppressor to your firearm. A Quick-Detach (QD) method is for fast, consistent attachment or removal across multiple rifles, while a Direct Thread option is for simplicity, less weight, and shorter length.
• Length/Weight: A heavier, longer suppressor generally offers better sound reduction (more internal volume) but sacrifices maneuverability. A shorter, lighter suppressor is more maneuverable but typically louder.
• Serviceability: User-serviceable suppressors (typically for rimfire or pistol) allow the user to disassemble and clean them. Sealed suppressors (typically for rifles) are cleaned by the intense pressure of firing.
  

For firearms, an impulse noise level of 140 dB is the commonly accepted threshold for “ear-safe” exposure.

This is not the intent of the design of the DCBL 9PCC and it is not suggested. Pistols often require a booster assembly (or Nielson device) to address their tilt-barrel function.

All the DCBL line use the standard HUB thread pitch of 1.375"-24 (1 ⅜ - 24).

The included hubs use the same common tool as a castle nut wrench for the buttstock of an AR15 or AR10.The flash hider uses a ¾” wrench.

• Max caliber for the DCBL 556 is .22 Creedmoor
• Max caliber for the DCBL 762 .300 PRC
• Max caliber for the DCBL 9PCC is 8.6 blackout

While there is no standard to define the full-auto rating, it generally means it can handle the extreme heat and pressure generated by sustained or repeated full-auto firing schedules without catastrophic failure or rapid degradation. The rapid degradation is the concern in titanium suppressors.

With sustained semi-auto fire our suppressors are expected to last for 15,000 rounds plus. For a less intense firing schedule like that of a bolt action you can expect it to last a lifetime.

If the short burst of full auto is done on a cool suppressor, damage will not occur. However, there is always the risk of increased wear on the first baffle. This is caused by the hot gases that build up under full auto that do not have time to dissipate. If this is done on a limited basis, that wear will be limited as well.

Titanium offers the best strength-to-weight ratio, resulting in a much lighter suppressor. This is highly beneficial for hunting, long walks, or on bolt-action rifles where weight is a critical factor. The thermal properties help in cooling the gases faster, a key to reducing the sound signature. Titanium is also very corrosion resistant.

The DCBL line of suppressors are 3D printed using titanium powder. At first, there may be some residual titanium powder on the inside from this process. This will cause initial sparks while the powder burns off but will be greatly reduced after approximately 200 rounds.  After that, sparks are not generally noticeable unless the firing schedule is very high. Also, sometime the sparks seen at night are actually from unburned gun powder from the cartridge. Sparks are not a concern as they are generally a harmless byproduct of the material.

The 3D printing process allows for the creation of highly complex, optimized internal geometry (baffles) that would be impossible to machine conventionally. This leads to better sound reduction, less weight, and improved gas flow. The Vent-Forward design manages gas by venting it forward away from the shooter, significantly reducing the amount of gas/toxic fumes that blow back into the shooter's face on semi-automatic hosts (like AR-15s), making for a much more pleasant and safe shooting experience.

The suppressors overall weight has to do with our design considerations. One is superior heat dissipation and management. The greater mass acts as a superior heat sink, allowing the suppressor to absorb and manage more heat. This is a key element in reducing the sound signature. Our design also focuses on increased durability. The thicker walls and stronger materials are less likely to warp, fail, or erode under extreme heat and pressure. With our design the benefits of a heavier suppressor outweigh the penalty of the minimal added weight.
NOTE: When comparing weight with other brand suppressors, understand that there is no standard the industry follows. Some publish weight of just the suppressor body and does not include critical components required to use the suppressor like the hub or flash hider in their measurement. EOTECH publishes both so you can compare accurately.

Barrel restrictions are published to ensure you manage pressure properly. Shorter barrels do not allow the propellant to burn completely, resulting in higher pressure and temperature at the muzzle when the bullet enters the suppressor. Barrel length restrictions ensure that the suppressor is not subjected to gas pressures that exceed its design limits, which could lead to baffle strikes or structural failure.

Users would choose a QD connection to take advantage of quick attachment or removal. If you intend to use one suppressor for multiple firearms, you can affix the same flash hider to all your firearms and quickly attach the suppressor when needed. Also, when you remove the suppressor, the flash hider remains on the barrel to protect the threads or allow you to shoot unsuppressed.

The HUB has become an industry standard, so all HUB adapters are 1.375-24 (1 ⅜ - 24) threads and will mate with our suppressors as well.

Please see the user manual.

Rifle Suppressors are generally considered self-cleaning due to the high pressure. Most do not require user cleaning and only need to be inspected for wear/damage. We do recommend the use of an ultrasonic cleaner every 2,500-3,000 rounds just to help reduce carbon build-up. For the 9PCC, it depends on the type of cartridge.Pistol cartridges have lower operating pressure and produce more lead and carbon, so it is recommended to clean the suppressor after 500-1,000 rounds. If using rifle cartridges, you should consider cleaning every 2,500-3,000 rounds. We recommend the use of an ultrasonic cleaner.

No. Rapid cooling is generally not recommended. Extreme temperature changes can shock the metal, potentially causing warping, cracking, or material stress. Allow the suppressor to cool down naturally or use a fan/compressed air if necessary. Rapid cooling can also trap moisture, leading to internal corrosion.

Be sure to store your suppressor in a cool, dry, and secure location (like a safe). Ensure it is fully dry before storing long-term to prevent corrosion.

EOTECH is proud to offer its No BS (NoBS) Lifetime Warranty on its premium line of DCBL Suppressors. No BS means exactly that. No BS. EOTECH will repair or replace all issues related to materials and workmanship. We want you to be as confident in your purchase as we are in the quality of our product. Should your DCBL Suppressor ever experience any issues, we will repair or replace it, as determined by EOTECH, with a comparable product in equal or better condition, free of charge, PERIOD.

NOTE: THIS WARRANTY DOES NOT APPLY TO THE FOLLOWING:

• Theft, loss, neglect, or vandalism.
• Abuse, misuse, improper installation and modification, alterations, abnormal use, or accidents.
• Cosmetic damage that does not affect the product’s use, operation or performance, as determined by EOTECH.
• Any defect or damage caused by repairs or services not performed by EOTECH.
• EOTECH products not in the DCBL Suppressor line.
• Damage related to full-auto firing.

Our first-class Customer Service staff can answer your questions and provide guidance.

• Help Center
• Call Toll Free: 888-EOTHOLO (734-356-8030)
• Support Hours: 9:00-17:00 EST, Mon-Thur. 9:00-16:00 EST. Friday

As of 2025, suppressors, commonly known as silencers, are legal for civilian ownership in 42 states across the United States. Suppressors are illegal in the following states:

• California
• Delaware (with restrictions)
• Hawaii
• Illinois
• Massachusetts
• New Jersey
• New York
• Rhode Island
• District of Columbia

However, there are specific regulations and restrictions that vary by state. It is best to always check with your local law enforcement agency.

Suppressors are regulated under the National Firearms Act (NFA) and require a federal transfer. Generally, the dealer you buy the suppressor from will guide you through the process, but here is an overview of the process:

• Select & Pay: At your dealer, choose and pay for your suppressor and the $200 Federal Tax Stamp. ($200 tax goes away 1 Jan)
• Submit eForm 4: Complete the ATF eForm 4 electronically, either as an Individual, Trust, or Corporation. This requires fingerprints and a passport-style photo (and documents of the trust or corporation, if applicable).
• Waiting Period: Wait for the ATF to process and approve the transfer. Recent approval times have been significantly faster with the eForm system but can still vary.
• Transfer & Pickup: Once approved, you return to the dealer to pick up your suppressor.

To legally purchase a suppressor, you must meet the following qualifications:

You must be a legal resident of the United States.

You must reside in a state where civilian ownership of suppressors is legal (currently 42 states).

You must be at least 21 years old to purchase a suppressor from a licensed dealer (FFL/SOT).

You must be legally eligible to purchase a firearm, meaning you must not be a prohibited person (e.g., no felony convictions, no domestic violence convictions, not a user of illegal drugs, etc.).

You must successfully pass an extensive ATF background check during the application process.