Unlock the Full Potential of Your FN PS90 with the CMMG Thread Adapter (57DA53A)

Are you a dedicated FN PS90 owner looking to customize your firearm, expand your muzzle device options, or convert your standard PS90 into a compact, highly adaptable Short Barreled Rifle (SBR)? The unique threading of the FN PS90 barrel often presents a challenge, limiting your choices when it comes to attaching standard muzzle devices like flash hiders, compensators, or suppressors. This is precisely the problem the CMMG 57DA53A Thread Adapter is engineered to solve, offering a precision-crafted solution that seamlessly bridges the gap between your PS90's proprietary threading and the widely adopted 1/2"-28 TPI standard.

For firearms enthusiasts, competitive shooters, or tactical operators who own an FN PS90, unlocking its full potential often means addressing its distinctive M12 x 1.0 LH (Left Hand) barrel threads. While this unique design serves its original purpose, it significantly narrows the field of compatible muzzle accessories. If you’ve ever found yourself asking, "How can I attach an AR-15 style muzzle device to my PS90?" or "What's the best way to get a suppressor onto my PS90 SBR?" the CMMG Thread Adapter (SKU: 57DA53A) is your definitive answer.

This robust steel adapter is specifically designed to transform the FN PS90's standard M12 x 1.0 LH barrel threads into the ubiquitous 1/2"-28 TPI thread pattern. This conversion is critical because 1/2"-28 TPI is the industry standard for most .223 Remington and 5.56x45mm NATO caliber muzzle devices, including a vast array of flash suppressors, muzzle brakes, compensators, and, most importantly, sound suppressors (silencers). By making this simple yet essential adaptation, CMMG empowers PS90 owners to explore a world of customization previously unavailable.

The Challenge of FN PS90 Muzzle Customization

The FN PS90, renowned for its distinctive design, ergonomics, and impressive firepower, features a barrel threaded with an M12 x 1.0 LH pattern. This left-hand thread is uncommon among most modern sporting rifles, particularly those chambered in similar calibers. While functional for the factory-installed muzzle device, it becomes a significant hurdle for users wishing to upgrade or specialize their firearm. Without an adapter, your options for reducing muzzle flash, mitigating recoil, or achieving sound suppression are severely limited, often requiring custom solutions or expensive, niche accessories. This can be particularly frustrating for those building a PS90 Short Barreled Rifle (SBR), where optimizing performance in a compact package is paramount. The CMMG 57DA53A adapter directly addresses this need, providing a reliable and cost-effective pathway to broad muzzle device compatibility.

Key Engineering and Design Features of the CMMG 57DA53A Adapter

The CMMG Thread Adapter (57DA53A) is not merely a simple threaded tube; it is a precision-engineered component built for durability, reliability, and seamless integration with your FN PS90.

• Premium Steel Construction: Crafted from high-grade steel, this adapter is designed to withstand the rigorous demands of consistent firing. Steel ensures excellent wear resistance and structural integrity, crucial for a component that will experience significant heat and pressure. This material choice guarantees a long service life, even under heavy use.
• Precision Machining: The CMMG 57DA53A adapter undergoes meticulous machining processes to ensure exact thread tolerances. This precision is vital for secure attachment, concentricity, and optimal performance of any muzzle device you choose to install. Correct threading prevents wobble, ensures consistent projectile flight paths, and minimizes the risk of baffle strikes when using a suppressor.
• Thread Conversion Specificity:
  • Internal Thread: M12 x 1.0 LH (Left Hand) – This is the precise match for the factory threads found on your FN PS90 barrel. The left-hand thread ensures secure attachment to the host firearm.
  • External Thread: 1/2"-28 TPI (Threads Per Inch) – This is the standard thread pattern for the vast majority of .233/5.56mm NATO muzzle devices, including the popular A2 "birdcage" flash hiders, various compensators, and the mounting systems for most suppressors.
• Compact and Tactical Design: With its sleek black finish and robust build, the adapter integrates seamlessly with the PS90's tactical aesthetic. Its compact profile adds minimal length to the barrel, preserving the firearm's inherent maneuverability, especially critical for SBR configurations.
• Optimized for Short Barrel Applications: While functional on standard PS90 barrels, this adapter is particularly beneficial for FN PS90 SBR builds. Short barrels often benefit most from effective muzzle devices to manage recoil, flash, and sound, and the adapter facilitates the use of dedicated SBR-optimized accessories.

Real-World Applications and Benefits for Your PS90

The utility of the CMMG 57DA53A Thread Adapter extends across multiple scenarios, enhancing the versatility and performance of your FN PS90.

1. Enabling SBR (Short Barreled Rifle) Builds: For those who’ve legally registered their FN PS90 as an SBR, the goal is often to create a compact, highly effective personal defense weapon or carbine. An SBR benefits immensely from specific muzzle devices designed to control the increased muzzle blast and flash associated with shorter barrels. The CMMG adapter allows SBR owners to select from a broad spectrum of 1/2"-28 muzzle brakes, flash suppressors, or quick-detach suppressor mounts.
2. Sound Suppression (Silencer/Suppressor Attachment): This is perhaps the most sought-after capability. With the CMMG adapter, PS90 owners can easily attach a wide range of .223/5.56mm NATO suppressors, transforming the PS90 into a quieter, more enjoyable shooting platform, ideal for tactical applications, range use, or even hunting (where legal). The precise threading ensures proper alignment, which is critical for preventing dangerous baffle strikes within the suppressor.
3. Flash Mitigation: Short barrels inherently produce more muzzle flash. Attaching an effective 1/2"-28 flash hider, like an A2 birdcage or a more advanced three-prong design, can drastically reduce visible muzzle flash, preserving the shooter's night vision and minimizing signature in low-light conditions.
4. Recoil Management and Muzzle Control: Compensators and muzzle brakes, readily available in 1/2"-28 TPI, redirect propellant gases to reduce felt recoil and muzzle rise. While the 5.7x28mm cartridge itself has mild recoil, a good compensator can further improve follow-up shot speed and accuracy, particularly during rapid fire.
5. Expanded Customization and Aesthetics: Beyond performance, the adapter allows for greater personalization. Users can choose muzzle devices that complement their build's aesthetics, creating a truly unique and personalized FN PS90.

Why is 1/2"-28 TPI So Important?

The 1/2"-28 TPI thread pattern is the de facto standard for AR-15 platform rifles and other firearms chambered in .223 Remington and 5.56x45mm NATO. This standardization has led to a massive aftermarket industry dedicated to producing compatible muzzle devices. By converting your FN PS90 to this common thread, the CMMG adapter grants you access to:

• Hundreds of Options: Instead of a handful of niche PS90-specific devices, you can choose from hundreds of flash hiders, compensators, brakes, and suppressor mounting solutions from virtually every major manufacturer.
• Cost-Effectiveness: The competition within the 1/2"-28 accessory market often translates to more competitive pricing and a wider range of features at various price points.
• Future-Proofing: Should you acquire new muzzle devices for other 5.56mm firearms, there’s a high likelihood they will also fit your PS90 equipped with this adapter.

Installation and Maintenance

Installing the CMMG 57DA53A Thread Adapter is a straightforward process for any PS90 owner. Typically, it involves:

1. Ensuring Firearm Safety: Always verify your firearm is unloaded and clear before beginning any work.
2. Removing Existing Muzzle Device (if any): If your PS90 has a factory-installed muzzle device, carefully remove it, often requiring a wrench or specific tool.
3. Cleaning Threads: Clean any residue or carbon buildup from the barrel threads to ensure a secure and precise fit.
4. Applying Thread Locker (Optional but Recommended): A small amount of medium-strength, removable thread locker can be applied to the barrel threads to prevent the adapter from loosening under recoil.
5. Attaching the CMMG Adapter: Thread the adapter onto your PS90 barrel, ensuring it is tightened securely but without excessive force. Follow manufacturer specifications for torque.
6. Attaching Your New Muzzle Device: Once the adapter is firmly in place, you can then attach your chosen 1/2"-28 TPI muzzle device (flash hider, compensator, suppressor, etc.), again following its specific installation instructions and torque recommendations.

Maintenance for the adapter is minimal. Regular cleaning to remove carbon buildup, especially around the threads, is recommended. As it is made of steel, a light coat of gun oil can help prevent corrosion if the firearm is stored in humid environments. Always ensure the adapter remains securely attached before and after each shooting session.

Why Choose CMMG?

CMMG is a name synonymous with quality, innovation, and reliability in the firearms industry. Known for their meticulous engineering and robust manufacturing processes, CMMG products are trusted by shooters who demand performance. The 57DA53A Thread Adapter is no exception, embodying the brand's commitment to delivering components that not only work but exceed expectations in terms of durability and precision. When you choose a CMMG product, you’re investing in a component that has been designed and tested to meet the rigorous demands of serious firearm use. Their reputation for producing high-quality AR platform parts and accessories extends to every product they offer, including essential adapters like this one for the FN PS90.

Where to Find the CMMG 57DA53A Thread Adapter

The CMMG 57DA53A Thread Adapter is a key component for any FN PS90 owner looking to enhance their firearm’s capabilities. This crucial accessory, along with a wide range of compatible muzzle devices and other firearm components, is readily available at DEGuns and deguns.com. As a reputable source for quality firearms and accessories, DEGuns is committed to providing enthusiasts with the parts they need to customize and optimize their shooting experience. Visit deguns.com to explore the CMMG 57DA53A Thread Adapter and a comprehensive selection of tactical firearm accessories.

In conclusion, the CMMG 57DA53A Thread Adapter is an indispensable tool for unlocking the full potential of your FN PS90, particularly for SBR builds and suppressor use. It solves the critical problem of incompatible barrel threads, opening up a vast world of .223/5.56mm muzzle devices. Precision-engineered from durable steel, it offers a reliable, long-lasting solution that enhances your shooting experience through improved recoil control, flash mitigation, and sound suppression capabilities. Empower your FN PS90 with the versatility it deserves.

Product Specifications & Compatibility

Attribute	Detail
Brand	CMMG
Model	Thread Adapter
Caliber Compatibility	5.56x45mm NATO / .223 Remington
Firearm Fit	FN PS90
Material	High-Grade Steel
Firearm Type	Tactical
Barrel Thread (Internal)	M12 x 1.0 LH (Left Hand)
Muzzle Device Thread (External)	1/2"-28 TPI (Threads Per Inch)
SKU / MPN	57DA53A
UPC	815835017112