--- title: "Knights Armament 5.56 QDC/CRS-PRT Suppressor FDE" description: "FDE 5.56 suppressor with QDC mounting, 6.25\" overall length, 19.2 oz weight, and 24 dB sound reduction." canonical_url: "https://www.kygunco.com/product/knights-armament-fde-5.56-qdc-crs-suppressor-black" meta: author: KYGUNCO "og:description": "FDE 5.56 suppressor with QDC mounting, 6.25\" overall length, 19.2 oz weight, and 24 dB sound reduction." "og:image": "https://cdn.kygunco.com/assets/products/232293/thumbnail.jpg?v=1712147221" "og:image:height": "500" "og:image:width": "500" "og:title": "Knights Armament 5.56 QDC/CRS-PRT Suppressor FDE" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Guns](https://www.kygunco.com/category/shooting/guns) / [Class III](https://www.kygunco.com/category/shooting/guns/class-iii) / [Suppressors](https://www.kygunco.com/category/shooting/guns/class-iii/suppressors) / KNG-121567-FDE ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/232293/main.jpg?v=1712147221) For illustration purposes only, this image may not be an exact representation of the product. # KNIGHTS ARMAMENT CO 5.56 QDC/CRS-PRT 5.56 NATO 6.25" Silencer / Suppressor - FDE The Knights Armament 5.56 QDC/CRS-PRT suppressor features Pressure Reduction Technology, a quick-disconnect mount for 5.56 QDC muzzle devices, and an FDE finish. It measures 6.25" overall, weighs 19.2 oz, and provides 24 dB of sound reduction while addressing muzzle and first-round flash. $1,246.88 ** 5 interest-free payments of **$249.38** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** Online In Store [** KYGUNCO Bardstown 401 Glenwood Drive, Bardstown KY](https://www.google.com/maps/dir/?q=place_id:ChIJfwecWCBSaIgRguIjuoPha40) [** KYGUNCO Louisville 2301 Nelson Miller Parkway, Louisville KY](https://www.google.com/maps/dir/?q=place_id:ChIJu1yzo5WZaYgRU5lrq2lQNhI) Item # 232293 Style KNG-121567-FDE UPC 819064018674 Condition New Manufacturer [Knights Armament](https://www.kygunco.com/brand/knights-armament) Model 556QDC Caliber 5.56 NATO, 223 Rem Weight 1 lb Action Silencer KAC's Pressure Reduction Technology (PRT) Signature Reduction Device line blends the proven durability and acoustic performance of the previous generation of KAC suppressors with pressure reduction design. These suppressors are specifically engineered to release the majority of the pressure contained in the device and bore prior to the operating system beginning extraction, which significantly reduces the negative effects of suppressor integration, and reduces felt recoil compared to a traditional suppressor with the same level of sound reduction. Muzzle flash, and specifically first-round flash, has also been directly addressed and minimized with the PRT design. The Quick Disconnect (QDC) mounting method ensures reduced carbon-lock, as well as minimal but repeatable point of impact shift when transitioning between suppressed and unsuppressed configurations. For interval maintenance, the PRT devices can be cleaned with commonly used bore solvents or ultrasonic tank cleaning with a water rinse. The Knight's Armament 5.56 QDC/CRS-PRT connects to all 5.56 QDC Muzzle Devices. Shop with KYGUNCO for the best selection, competitive pricing, and exceptional customer service. Experience the difference that comes with buying from a trusted outdoor retailer with over 20 years of experience in the industry. **SPECIFICATIONS** - Addition to Bare Muzzle: 5.67″ (14.41cm) - Addition to QDC 3-prong FH: 4.15″ (10.55cm) - Overall Length: 6.25″ (15.88cm) - Weight: 19.2oz (545g) - Sound Reduction: 24dB ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). ## Watch The Product In Action ## Frequently Bought Together 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## Don't Forget Your Ammo ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/knights-armament-fde-5.56-qdc-crs-suppressor-black#webpage","@type":"WebPage","description":"FDE 5.56 suppressor with QDC mounting, 6.25\" overall length, 19.2 oz weight, and 24 dB sound reduction.","name":"Knights Armament 5.56 QDC/CRS-PRT Suppressor 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