Knights Armament (KAC)
Knights Armament QDSS-NT4 Suppressor KAC 5.56mm w/flash hider - Black and Taupe
$1,685.00 - $1,875.00
The QDSS NT4 PRG 5.56mm represents the next chapter in Knight's Armament Company's storied NT4 lineage. This updated suppressor maintains the iconic "corn cob" profile that clone enthusiasts cherish while incorporating modern advancements in suppressor technology. Available in both Black and Flat Dark Earth (FDE), the NT4 PRG offers a unique opportunity to upgrade your Mk18 CQBR or M4A1 build without sacrificing authenticity.
Developed to address the vulnerabilities of the original NT4, which has been in continuous U.S. Military service since the mid-1990s, the PRG variant introduces Pressure Reduction Technology (PRT) and a state-of-the-art sintered Inconel body. These improvements significantly enhance performance and durability while maintaining full compatibility with existing M4QD mounts, ensuring a seamless transition for current NT4 users.
• PRT system vents pressure forward, reducing user exposure to harmful gases
• Sintered Inconel construction improves heat resistance and overall durability
• Maintains the classic NT4 exterior for clone-correct aesthetics
• Quick-detach system for rapid attachment and removal
• Purge (PRG) design mitigates first-round flash and "first-round pop"
• Fully compatible with all M4QD line muzzle devices
The NT4 PRG's development stemmed from extensive field-testing and operator feedback. KAC engineers focused on addressing the primary concerns of suppressed fire in harsh environments: back-pressure, first-round flash, and longevity. The result is a suppressor that not only looks the part for clone builds but also delivers enhanced performance that meets the demands of modern tactical operations.
At the core of the NT4 PRG is its innovative baffle matrix. This design mechanically purges combustible gases from the suppressor, effectively eliminating first-round flash across multiple spectrums, including near, short-wave, and mid-wave infrared. This advancement doesn't just improve stealth; it also enhances reliability by maintaining a more consistent carrier velocity and rate-of-fire comparable to unsuppressed fire.
For clone enthusiasts and operators alike, the NT4 PRG offers a compelling package. It preserves the legacy of the original NT4 while incorporating technologies that address its predecessor's limitations. Whether you're building a period-correct GWOT-era rifle or seeking to upgrade an existing setup, the NT4 PRG delivers clone aesthetics with modern performance.
Durability has been a key focus in the PRG's design. The monolithic structure efficiently distributes thermal energy, eliminating weak points that plagued earlier models. In continuous-fire testing, the NT4 PRG endured 1.5–2 times the round count of traditional designs before failure. Even in the unlikely event of catastrophic failure, the PRG's engineering ensures all energy is directed downrange, prioritizing operator safety.
A: The NT4 PRG incorporates Pressure Reduction Technology (PRT) and a Purge (PRG) design with a sintered Inconel body. It offers improved pressure management, first-round flash elimination, and enhanced durability while maintaining the iconic aesthetics and compatibility of the original NT4.
A: Yes, the NT4 PRG is fully compatible with the M4QD line of muzzle devices, ensuring seamless integration with current setups.
Technical Specifications | |
|---|---|
| Caliber | 5.56mm NATO |
| Material | 718 Inconel |
| Finish | Black or FDE |
| Overall Length | 6.75" |
| Diameter | 1.5" (+/-) |
| Weight | 19.75 oz |
| Mount Type | QDSS / Gate-Latch |
| Sound Reduction | 28 dB |
| Addition to Bare Muzzle | 5.88" |
| Addition to M4QD FH | 4.63" |
| Sound Reduction | 28 dB |
| MPN | 121569-BLK/FDE |
Buying and shipping through Charlie’s is easy, but there is some information you need to know. This item must ship to FFL holder. No civilian exceptions.
1) Check your state laws to make sure the federally regulated item you want to purchase is legal in your state.
2) Find your FFL… Have your dealer send us a copy of their FFL and SOT to Charlie’s (Make them earn their fee!). Not every FFL is a SOT or Class 2 / Class 3 dealer.
3) Be patient! You should hear from our compliance department within 3-4 business days. If not, feel free to reach out for a status update.
That’s it! We try to make this process as simple as possible for our customers. Please click the “Buying a Firearm” tab at the top of this page for more information.
THIS IS A SERIALIZED ITEM. It must ship to a Federal Firearms License holder. No civilian exceptions.
Buying and shipping through Charlie’s is easy, but there is some information you need to know. Only a federally licensed firearms dealer may receive a firearm or federally regulated serialized item (like a receiver or suppressor). We cannot ship these items directly to you. Please follow these steps to process your transaction:
1) Check your state laws to make sure the federally regulated item you want to purchase is legal in your state. Your FFL dealer should be able to give you all of the necessary information regarding your state specific laws. But, if we ship to your FFL, and there is a legal issue, we cannot accept a return. So please make sure that you know and follow your local and state laws.
2) A quick google search will show you what Federal Firearms Licensed (FFL) dealers are in your area. When you are ready to purchase, contact the FFL dealer you would like to use and get their shipping address. During the check-out, put YOUR address in the “billing” section and the FFL DEALER’S address in the “shipping” section. If you don’t know your FFLs address, that’s okay. You can send the information later.
3) After check out, make sure to contact your FFL dealer to ensure they will receive your shipment for you (most do this for a small fee, but you should always double check).
4) Have your dealer send us a copy of their FFL to FFL@CharliesCustomClones.com. Charlie’s does not reach to your FFL (MAKE THEM EARN THEIR FEE!!!)
5) Be patient! In order to ensure we remain compliant with all federal laws, our compliance department is kept separate from our sales and operations team. Please allow a few days for our compliance officer to verify all of your dealer’s documents and ensure all federal laws are being observed. You should hear from our compliance department within 3-4 business days. If not, feel free to reach out for a status update.
That’s it! We try to make this process as simple as possible for our customers, but if you are unfamiliar the process or have any other questions, please visit our How to Buy a Suppressor page for more details.
Knights Armament (KAC)
