Knight’s Armament QDC CRS-1 5.56 Rifle Suppressor
KAC’s successor to the NT4 and original QDC suppressor — 3D printed and incorporating their Pressure Reduction Technology (PRT)
KAC PN 121567-BLK & 121567-FDE
Connects to all 5.56 QDC Muzzle Devices. Available in Black and Flat Dark Earth (-BLK) (-FDE).
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
Regulations
This is a regulated item and requires shipment to a FFL/SOT holder. After you have placed your order, please have your order number and a copy of your preferred store’s FFL/SOT emailed to info@rooftopdefense.com to avoid delays. After I have received their FFL/SOT, I will file a Form 3. Upon approval, I will ship your order as soon as possible!



Matthew B. (verified owner) –
Not the lightest or quietest can but it’s a tank and reduces gas to the face. You can’t find it cheaper anywhere else.
Stephen M. (verified owner) –
I use this on a mod2 CQB and it is fantastic. I was using a RC2 and got a lot of gas to the face.
Form 3 and shipping time was lighting fast, and my Form 4 approved in 1 day.
Christian D. (verified owner) –
Rooftop not only has the best prices on these KAC cans but they also have super-fast form 3 filing and shipping. They had my most recent form 3 filed in 6 mins after receiving my FFL’s documents. Absolutely awesome! Seriously these guys are the best in the biz. Can’t beat the sweatshop!