KAC QDC Suppressors Finally Hitting Stores

**Sensei** · 04-30-16, 23:48

Well, I thought that it's time to finally update this thread. I've got about 4 months and 1000 rounds or so behind two KAC cans - a QDC and a CQD CQB. Most of the time has been spent on a 14.5" SCAR 16s (barrel cut by Nefarious Arms) and an 11.5" BCM lightweight upper. I've also shot the QDC CQB on a 11.5" SR-15 upper a few times.

Needless to say I'm happy. The lock-up is rock solid. POI shift is less than 1" down at 100 yards (if it's really there at all) with the CQB on the SCAR which is equipped with a VCOG. I don't detect any POI shift with the shorter CQB version on any of my 11.5" uppers, but all of those uppers are wearing Aimpoint T1s or T2s which are not really able to detect fine changes in POI.

GTF is minimal - there is a slight puff but nothing like what I'm getting with a recently acquired SF SOCOM 300SPS.

As for sound reduction, the full size sounds like every other 556 can that I've used. It's a little loud probably due to the supersonic crack that makes my ears ring a little without ear pro. However, I experience this with EVERY 556 can that I've shot. The CQB version is definitely not hearing safe, but it definitely mitigates some of the head rattle when I fire it inside of a room.

Anywho, they are not cheap. However, they are very nice. I give them a solid A for lock-up and POI shift, a B+ for GTF and weight/size, and a C for noise reduction.

**Tactical Spork** · 05-02-16, 11:27

Question, what does GTF stand for?

**nml** · 05-02-16, 11:59

gas to face

**Tactical Spork** · 05-02-16, 12:02

Ahh. Got it. Thanks for the clarification

Sent from my iPhone using Tapatalk

**patriot_man** · 05-03-16, 04:47

Originally Posted by Sensei

Well, I thought that it's time to finally update this thread. I've got about 4 months and 1000 rounds or so behind two KAC cans - a QDC and a CQD CQB. Most of the time has been spent on a 14.5" SCAR 16s (barrel cut by Nefarious Arms) and an 11.5" BCM lightweight upper. I've also shot the QDC CQB on a 11.5" SR-15 upper a few times.

Needless to say I'm happy. The lock-up is rock solid. POI shift is less than 1" down at 100 yards (if it's really there at all) with the CQB on the SCAR which is equipped with a VCOG. I don't detect any POI shift with the shorter CQB version on any of my 11.5" uppers, but all of those uppers are wearing Aimpoint T1s or T2s which are not really able to detect fine changes in POI.

GTF is minimal - there is a slight puff but nothing like what I'm getting with a recently acquired SF SOCOM 300SPS.

As for sound reduction, the full size sounds like every other 556 can that I've used. It's a little loud probably due to the supersonic crack that makes my ears ring a little without ear pro. However, I experience this with EVERY 556 can that I've shot. The CQB version is definitely not hearing safe, but it definitely mitigates some of the head rattle when I fire it inside of a room.

Anywho, they are not cheap. However, they are very nice. I give them a solid A for lock-up and POI shift, a B+ for GTF and weight/size, and a C for noise reduction.

Is it easy to take the can off after a high round count or does the carbon cause the can to stick?

**Sensei** · 05-03-16, 08:16

Originally Posted by patriot_man

Is it easy to take the can off after a high round count or does the carbon cause the can to stick?

So far so good. I've taken it off a couple of times so the most rounds that I've put thru it in one sitting is about 300-400. I spray the inside with CLP before each range session and run a nylon brush (came with my SF cans) through the baffles which seems to be sufficient.

**Jwknutson17** · 05-03-16, 08:25

Originally Posted by patriot_man

Is it easy to take the can off after a high round count or does the carbon cause the can to stick?

My would stick after a good 500 rounds through it. After I started using Fireclean on my muzzle device and the ball bearings / attachment surface area, I can pull the can off pretty easily after even a heaver firing schedule.

**Pappabear** · 05-03-16, 13:53

I would love to do side by side with these premium cans vs my M42K cans. For my 10.5 builds they seem hard to beat. Running aim points and CQB work, I just wonder if the coin is justified.

Let me clarify, if it's your gun, your money and it makes you happy, it's worth it. I just bought two more M42k cans for $600 each for 10.3 guns. I know I won't regret it. However, I do love great stuff and would like to bust some rounds through a KAC can. Maybe someday? I just usually buy what my LGS has in stock since AZ has pretty good inventory on average. Interesting thread.

PB

**Sensei** · 05-03-16, 16:31

Originally Posted by Pappabear

I would love to do side by side with these premium cans vs my M42K cans. For my 10.5 builds they seem hard to beat. Running aim points and CQB work, I just wonder if the coin is justified.

Let me clarify, if it's your gun, your money and it makes you happy, it's worth it. I just bought two more M42k cans for $600 each for 10.3 guns. I know I won't regret it. However, I do love great stuff and would like to bust some rounds through a KAC can. Maybe someday? I just usually buy what my LGS has in stock since AZ has pretty good inventory on average. Interesting thread.

PB

There have been a few head-to-heads done on YouTube by MAC and SilencerShop.

For me, the decision to get a couple KAC cans was STRONGLY influenced by the fact that I have 5 KAC uppers with KAC QDC muzzle devices.