Knights Armament 5.56 MCQ-2 Suppressor Fde With QDC Flash Hider - 123993-FDE
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THIS IS A CLASS 3 NFA ITEM. ALL NFA RULES APPLY, this product requires a Federal Firearms License (FFL) and a Special Occupational Tax Stamp (SOT) to be on file. It is the purchaser’s responsibility locate a properly licensed FFL. If we do not have a copy of the clearly signed and dated FFL/SOT, you may email them to [email protected] or use our FFL submission form. Read more about our process here.
NFA Item Cancellation & Refund Policy
Cancellations with Full refunds of NFA items are only possible if a cancellation request is received & acknowledged before the transfer process has been initiated. Initiation of the transfer process is defined as: The ATF form 3 which allows us to transfer the NFA item to your selected dealer has been submitted to the ATF. The ATF form 3 submission typically occurs 1-3 days after your order is placed, depending on order volume and processing times. Cancellations and partial refunds are still possible up until the point the NFA item is shipped to your FFL dealer. Below are the fees that will apply at the various stages of NFA item order processing:
- Order Received – Form 3 not yet submitted: Full refund
- Form 3 Submitted – Not yet approved by ATF: 10% Processing Fee
- Form 3 Approved by ATF – Item not Shipped: 20% Processing Fee
- Form 3 Approved by ATF – Item shipped: No refund
- Form 4 Submitted – Disapproved/Returned without action: 35% Processing Fee + return shipping costs*
*NOTE: This may not always be possible and requires us to successfully recover the NFA item from your dealer with original packaging and in NEW condition. If we are unable to recover the NFA item in the condition stated above, no refund is possible.
This policy is only a guideline and subject to change depending on certain situations. There is significant time and effort involved by both AR15Discounts and your selected dealer to reacquire the item once the ATF form 3 has been submitted and approved.
SKU: 31522 Categories: Suppressors, Excluded from Codes
Elevate your tactical setup with the Knights Armament 5.56 MCQ-2 Suppressor in FDE, a compact powerhouse designed for elite performance in close-quarters battle (CQB) scenarios. This innovative 5.56 suppressor, complete with a QDC Flash Hider, delivers exceptional sound and flash reduction without compromising on reliability or handling. Engineered for AR-15 platforms and similar 5.56 NATO rifles, it minimizes muzzle signature while maintaining low back pressure, ensuring smoother operation and reduced shooter fatigue during extended sessions.
Key Features
- Pressure Reduction Technology (PRT): Features a vented gas-bleed system that significantly lowers back pressure, promoting reliable cycling and reducing gas blowback for a cleaner shooting experience.
- Quick Detach (QD) Mounting: Seamlessly attaches to all 5.56 QDC muzzle devices, including the included QDC Flash Hider, for rapid deployment and secure fit with minimal point-of-impact (POI) shift.
- Compact and Lightweight Design: At just 4.5 inches long and 12.7 ounces, it adds minimal length and weight, ideal for short-barreled rifles (SBRs) and maintaining maneuverability in dynamic environments.
- Superior Durability: Constructed from high-strength Inconel for both body and baffles, this suppressor withstands full-auto fire and harsh conditions, offering military-grade toughness for demanding users.
- Enhanced Stealth: Provides effective sound suppression to approximately 148 dB at the ear (1m left), paired with outstanding flash hiding to conceal your position and protect night vision compatibility.
Specifications
- Caliber: Up to 5.56 NATO (.223/5.56)
- Length: 4.5 inches overall (3.9 inches addition to bare muzzle)
- Weight: 12.7 ounces
- Material: Inconel (body and baffles)
- Finish: Flat Dark Earth (FDE)
- Mount Style: QD with QDC compatibility
- User Serviceable: No – designed for long-term performance without disassembly
Why Choose the Knights Armament MCQ-2 Suppressor?
In the world of 5.56 suppressors, the MCQ-2 stands out by addressing key pain points like excessive gas in the face and added bulk on compact rifles. Its PRT baffle style vents excess pressure forward, solving common issues with over-gassed systems and improving accuracy under suppressed fire. Whether you’re a competitive shooter seeking precision or a tactical operator needing discretion, this suppressor enhances control, reduces recoil impulse, and preserves your rifle’s balance. Backed by Knights Armament’s reputation for innovation, it’s a smart investment for anyone serious about suppressed 5.56 performance.
Ready to experience the difference? Secure your Knights Armament 5.56 MCQ-2 Suppressor FDE with QDC Flash Hider today and transform your firearm into a stealthier, more efficient tool for the range or field.
Frequently Asked Questions
1. What makes the PRT technology in the MCQ-2 unique?
PRT incorporates a vented gas-bleed system that redirects pressure forward, reducing back pressure by up to 30% compared to traditional designs, which helps prevent cycling issues and minimizes shooter exposure to gases.
2. Is the MCQ-2 suppressor compatible with my AR-15?
Yes, it mounts via the QDC system to standard 5.56 flash hiders and muzzle devices, ensuring broad compatibility with most AR-15 and similar platforms chambered in 5.56 NATO.
3. How durable is this suppressor for high-volume shooting?
Built entirely from Inconel, it’s rated for full-auto use and extreme conditions, providing exceptional longevity without the need for user servicing.
| Weight | 12.7 oz |
|---|---|
| Dimensions | 4.5 × 1.5 × 1.5 in |
| Mount Style | QD |
| Length (inches) | 5 |
| Caliber (Maximum) | .22 (.223/5.56/.224 |
| Baffle Material | Inconel |
| Baffle Style | PRT (Pressure Reduction Technology) vented gas‑bleed system |
| Body Material | Inconel |
| User-Serviceable | No |
| Finish | Other |
| MPN | 123993-FDE |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.
Please select an FFL from the table below, if you do not see your desired FFL, click "Set Later" and you will be able to enter your FFL's information after checkout.
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