Knights Armament 5.56 CRS-1 Suppressor Black - 121567-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: 31523 Categories: Excluded from Codes, Suppressors
Elevate your tactical setup with the Knights Armament 5.56 CRS-1 Suppressor in Black, a premium rifle silencer engineered for superior sound and flash suppression on 5.56mm platforms. Designed by Knight’s Armament Company, this suppressor combines cutting-edge Pressure Reduction Technology (PRT) with robust construction to deliver exceptional performance without compromising your firearm’s reliability. Whether you’re a professional operator or a dedicated enthusiast, the CRS-1 minimizes gas blowback, reduces shooter fatigue, and maintains near-unsuppressed bolt velocity for seamless operation in high-stakes scenarios.
Key Features
- Quick Detach (QD) Mounting System: Effortlessly attaches to compatible KAC 5.56 QDC muzzle devices with minimal point-of-impact shift, ensuring quick deployment and consistent accuracy.
- Pressure Reduction Technology (PRT): Features vented chambers that drastically cut back pressure, reducing gas to the face and preventing accelerated wear on your AR-15 or similar rifle.
- Exceptional Flash Suppression: Virtually eliminates muzzle flash, even on the first round, enhancing stealth and low-light visibility for tactical advantage.
- High Durability Construction: Built from 718 Inconel alloy for extreme heat and impact resistance, ideal for full-auto and sustained fire without failure.
- Compact and Lightweight Design: Adds only 19.2 ounces and 4.15 inches to your barrel, balancing suppression benefits with maneuverability.
Technical Specifications
- Caliber: Rated for .223/5.56mm (up to .224 caliber)
- Length: 6.25 inches overall
- Weight: 19.2 ounces
- Material: 718 Inconel baffles and body
- Finish: Black Oxide
- User-Serviceable: No – Welded for maximum integrity
- Mount Style: QD compatible with KAC 5.56 QDC devices
- Baffle Style: PRT vented chambers for gas reduction
Why Choose the Knights Armament 5.56 CRS-1 Suppressor?
In a market flooded with 5.56 suppressors, the CRS-1 stands out by addressing key pain points like excessive gas blowback and flash signature that plague traditional designs. Its PRT system keeps your shooting experience cleaner and more comfortable, while the Inconel build ensures longevity in demanding environments. Users praise its ability to maintain rifle performance during rapid fire, making it a top choice for those prioritizing reliability and reduced signature over basic noise attenuation. This suppressor not only quiets your shot but enhances overall weapon handling, giving you the edge in training or operations.
Ready to experience unmatched suppression for your 5.56 rifle? Secure the Knights Armament 5.56 CRS-1 Suppressor today and transform your firearm’s capabilities with professional-grade technology.
Frequently Asked Questions
A: It requires KAC 5.56 QDC-compatible muzzle devices for secure attachment. Verify your setup for optimal performance.
A: Yes, the PRT technology significantly minimizes back pressure, helping preserve bolt speed and reducing gas in the shooter’s face.
A: Absolutely, its durable Inconel construction is designed for professional, high-volume use including full-auto applications.
| Weight | 19.2 oz |
|---|---|
| Dimensions | 6.25 × 1.55 × 1.55 in |
| Mount Style | QD |
| Length (inches) | 6 |
| Caliber (Maximum) | .22 (.223/5.56/.224 |
| Baffle Material | Inconel |
| Baffle Style | PRT vented chambers (gas‑reduction system) |
| Body Material | Inconel |
| User-Serviceable | No |
| Finish | Black Oxide |
| MPN | 121567-BLK |
| UPC | 819064018667 |
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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