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Suppressors KAC 7.62 QDC CRS-PRG Feedback

T

TheVolunteers

Private
Full Member
Minuteman
Feb 26, 2017
19
1
#1
I'm looking to make my first step into the suppressor world and looking to suppress my AR-15, currently I have a 16" barrel 5.56mm but I am also looking to build a 24" 6ARC upper and 9" 300blk upper. My current rifle as well as planned uppers have/will have adjustable gas blocks. I know some will argue that I should look into dedicated cans for each platform, and while I may go that way in the future, to start with I'd like to get a can that could work well across all 3 calibers.

I've been doing my research and gotten fixated on the KAC 7.62 QDC CRS-PRG can. I like what I've read about it's durability, exceptional flash suppression, flow through design, and overall solid sound suppression abilities. I don't like how heavy it is, but given its performance in these other areas I am thinking I might be able to put up with it. KAC cans are pricey but if the performance justifies it I'm willing to pay the price. Given my use case, does this sound like a reasonable place to start?
 
#2
Have one being shipped to my FFL… it’s the 5.56 version. I’ll happily give you an update after I get it. It’s going on my SR15 so I figured I’d buy KAC.
 
#3
The KAC QDC cans are pretty solid, at the moment it's extremely difficult to find any of the 5/8x24 muzzle devices though. Just food for thought. They also usually don't come with one, which is fairly annoying considering the price.
 
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#4
The 7.62 QDC PRG is my first and only can. The prices on them have come down recently, as a result of the ease of production with 3D printing. I got it for the same reasons you listed (multi caliiber use and built like a tank) and am very happy with it.

I have used it mostly on a KAC APC, but also on a Sons SPR barrel with 5/8 threads. I have never had an issue with carbon lock, the sound suppression has been good for both 5.56 and 7.62. 5/8 flash hiders occasionally pop up for MSRP, supposedly they're releasing new 5/8 MDs sometime this year.
 
#6
I have about a half-dozen 556 and 30 caliber Surefire and B&T cans, as well as a Putnik and some other crap, the KAC alphabet soup cans are the best all around - bar none.

The only concrete "cons" against it is the weight (if that matters to you) and the attachment ecosystem. The Quick Detach Collar (QDC) is probably second best behind the Surefire, but it's super hard to get any of them, let alone in 5/8. They're way overpriced for what they are too, like $380 for a 2-port brake and nearly $500 for a QDC/MAMS.

Now that KAC is doing a new line, the dealer pricing is flattened to $1050. For that price, you won't beat it for a blend of flow through design, flash reduction, heat resistance, decibel reduction, and POI shift. That would've been another "con" because these things were closer to $2000 at one point.

I use it exclusively on my M110A3 but I'm converting my SR25 E2/PR back to use the KAC muzzle device since I also snagged a CQB to go with the CRS. I know all things are not equal, but being a flow through and with 6.5CM it's still quieter at the ear versus 308 with a Surefire 300SPS and SOCOM762-RC2.

Apparently the next gen will have relatively more decibel reduction with better flowthrough and lighter weight which is crazy to me, but I don't think *THAT* is worth $1800-2000.
 
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#7
BipThatInstance said:
I have about a half-dozen 556 and 30 caliber Surefire and B&T cans, as well as a Putnik and some other crap, the KAC alphabet soup cans are the best all around - bar none.

The only concrete "cons" against it is the weight (if that matters to you) and the attachment ecosystem. The Quick Detach Collar (QDC) is probably second best behind the Surefire, but it's super hard to get any of them, let alone in 5/8. They're way overpriced for what they are too, like $380 for a 2-port brake and nearly $500 for a QDC/MAMS.

Now that KAC is doing a new line, the dealer pricing is flattened to $1050. For that price, you won't beat it for a blend of flow through design, flash reduction, heat resistance, decibel reduction, and POI shift. That would've been another "con" because these things were closer to $2000 at one point.

I use it exclusively on my M110A3 but I'm converting my SR25 E2/PR back to use the KAC muzzle device since I also snagged a CQB to go with the CRS. I know all things are not equal, but being a flow through and with 6.5CM it's still quieter at the ear versus 308 with a Surefire 300SPS and SOCOM762-RC2.

Apparently the next gen will have relatively more decibel reduction with better flowthrough and lighter weight which is crazy to me, but I don't think *THAT* is worth $1800-2000.
Click to expand...

KAC is doing a new suppressor line? I thought the PRG was the new
 
#8
AustinP69 said:
KAC is doing a new suppressor line? I thought the PRG was the new
Click to expand...
Yeah they're doing a Gen 2 of all of the QDC/PRG-CRS ones for sure -- the CRS-2 -- and a new M110-PRG can as well.



www.knightarmco.com

7.62mm PRS-1 - Knight's Armament Company- Suppressor

7.62mm PRS-1 - Knight's Armament Company- Suppressor-121568
www.knightarmco.com www.knightarmco.com

www.knightarmco.com

7.62mm DTS-1 / 7.62mm DTS-1.1 - Knight's Armament Company- Suppressor

7.62mm DTS-1 / 7.62mm DTS-1.1 - Knight's Armament Company- Suppressor-120333 and 122007
www.knightarmco.com www.knightarmco.com
 
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#9
Damn :LOL: I thought the PRG was new, it was barely available like latter half of this past year if I recall, and they're already on to the new.

That PRG can is really good too, interested how much better the new new is
 
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#12
You guys weren't kidding, KAC's muzzle devices are pricey and really hard to find. Dumb question, is there a 5.56 muzzle device that will adapt to a .30 caliber can, or do I have to go with a .30 caliber muzzle device for all 3 rifles (5.56, 6ARC, and 300blk)?

Second kind of dumb question, if I decided I wanted to go with the 5.56 KAC can, would that work with a 6ARC? I've read that a lot of 5.56 cans will work with a 6mm but wasn't sure.
 
#13
TheVolunteers said:
You guys weren't kidding, KAC's muzzle devices are pricey and really hard to find. Dumb question, is there a 5.56 muzzle device that will adapt to a .30 caliber can, or do I have to go with a .30 caliber muzzle device for all 3 rifles (5.56, 6ARC, and 300blk)?

Second kind of dumb question, if I decided I wanted to go with the 5.56 KAC can, would that work with a 6ARC? I've read that a lot of 5.56 cans will work with a 6mm but wasn't sure.
Click to expand...
THIS, but good luck finding one. Get on the wait list at a few places. I wouldn't trust the 6mm in a 5.56 can myself. Probably be fine, but....
 
#14
Hmmmm, given the KAC-up with muzzle device shortages, maybe I made the right choice after all! I don’t really care about flash or absolute best dB reduction, don’t shoot ARs until they glow, but really care about the least gas-to-face.

I mean, it’d be great to have those KAC advantages, but not with no way to attach the thing to my gun.
 
#16
So I'm going to do a little scope creep with this thread, but would KACs 7.62 can be good for a 300blk? My intention is to run 100% suppressed with supers and subs. I've read that flow through cans aren't great with a 300blk but wanted to hear your thoughts.
 
#19
Kickin45 said:
I’ve shot well over 200 rounds of 308 through mine. Not a single spark ever.
Click to expand...
A HUX Flow 7.62 Ti, in low light/dark correct? I don’t believe you. You would be the only one in existence to not have a shower of sparks, that never fully goes away.

If you had the 17-4 SS version that Geissele sells exclusively, then I would believe you.
 
#20
Well, you’ve got me there. I can say I’ve never shot it in pitch black of night.
But living in Western Washington, our midday can look like several minutes past sunset.
I always shoot with a buddy, no reports of sparks.
 
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