Knights Armament 5.56 MCQ-2 Suppressor Blk - 122777-BLK
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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: 31519 Category: Suppressors
Experience elite sound and flash suppression with the Knights Armament 5.56 MCQ-2 Suppressor in Black, engineered for tactical precision and reliability. Designed by Knights Armament Company, a leader in military-grade firearms accessories, this compact QD suppressor transforms your 5.56 rifle into a stealthier, more controllable platform—ideal for close-quarters battle (CQB) and suppressed shooting without compromising maneuverability.
Key Features
- Quick Detach (QD) Mounting System: Effortlessly attach and detach with the proprietary KAC QDC system, ensuring secure fit and rapid deployment on compatible hosts.
- PRT Vented Baffle Design: Utilizes advanced Progressive Radial Tube technology for optimal gas flow, reducing back pressure to minimize blowback and enhance reliability in semi-auto or full-auto fire.
- Inconel Construction: Both baffle and body crafted from durable Inconel alloy, offering exceptional heat resistance and longevity even under intense, sustained use.
- Superior Flash Suppression: Dramatically cuts first-round flash to 0.61 mcd*s, preserving night vision and concealing your position effectively.
- Compact Profile: Adds only 3.9 inches to your muzzle, maintaining a low-profile setup for short-barreled rifles (SBRs) and improving overall handling.
Technical Specifications
- Caliber: Rated for 5.56 NATO / .223 Remington
- Overall Length: 4.43 inches (11.25 cm)
- Weight: 12.7 oz (360 g)
- Diameter: 1.5 inches
- Sound Reduction: 148 dBA at 1m left side; 141 dBA at shooter’s ear
- Finish: Black Oxide for corrosion resistance
- User Serviceable: No—sealed for maximum durability and minimal maintenance
Why Choose the MCQ-2 Suppressor?
In the demanding world of tactical shooting, the MCQ-2 addresses key pain points like excessive noise, flash giveaway, and added bulk. Its low-back-pressure design reduces gas in your face during rapid fire, improving comfort and safety—especially indoors or in confined spaces. Users praise its balance of suppression and performance, making it a go-to for professionals seeking a suppressor that doesn’t alter rifle balance or cycling. Whether for home defense, training, or operations, this Inconel-built powerhouse delivers consistent results without the need for frequent servicing, saving you time and hassle.
Elevate your 5.56 rifle’s capabilities today with the Knights Armament MCQ-2 Suppressor. Secure yours now and unlock quieter, more discreet shooting sessions that keep you in control.
Frequently Asked Questions
Q: Is the MCQ-2 full-auto rated?
A: Yes, its robust Inconel construction and vented baffle design make it fully rated for full-auto fire, ensuring durability under high-volume shooting.
Q: Will this suppressor affect my rifle’s accuracy?
A: The MCQ-2 maintains exceptional alignment with its QD mount, resulting in negligible impact on accuracy for most setups.
Q: What maintenance does it require?
A: As a non-user-serviceable unit, routine cleaning isn’t needed; simply wipe down the exterior after use to preserve the black oxide finish.
| Weight | 12.7 oz |
|---|---|
| Dimensions | 4.5 × 3.9 × 1.5 in |
| Mount Style | QD |
| Length (inches) | 5 |
| Caliber (Maximum) | .22 (.223/5.56/.224 |
| Baffle Material | Inconel |
| Baffle Style | PRT vented baffle design |
| Body Material | Inconel |
| User-Serviceable | No |
| Finish | Black Oxide |
| MPN | 122777-BLK |
| UPC | 819064019534 |
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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