I managed to get 3-inch groups day after with the Linear Comp so I guess that the wind really threw me off and I was a little tired the day before . www.wingtactical.com/firearm-parts/ar-15/muzzle-devices/kaw-valley-precision-linear-comp-5-56-223/
Have a question kind of new into the pcc, I built a pcc with a ballistic advantage 5 inch barrel with the Kaw Valley XL slim the longest one they had ,Anyways the kaw valley in under the handguard which is 6 inches just wondering if it safe to have this setup because i find myself with fat hands going passed the barrel and middle of the kaw valley comp.
@user-nu6zn1br6w as long as the linear comp is on tight and your hand stays on the handguard, you should be good. You should put a three slot rail on the bottom as anchoring point for your hand. People will use a handstop, but I find the three slot rail is adequate and later. Also a good place to mount a bipod if you want to.
I use one on my Ruger Ranch Rifle chambered for the 7.62x39. Your point of impact changes taking it off , the felt noise though is a bonus. I like it for short barrels
I used some chinese no name brand, basically just a 3 inch x 1.5 inch tube that came with adapter that installed before muzzle brake, lets you screw it on/off easily. I use it at the range if someone is at next bench just so they don't get the concussive blast from the brake(negates the brake effect for me also) but can take it off if no one around. I wasn't aware of impact shift but haven't used it for 2 years, next time I do I'll be on the look out for any shift.
I have not seen any over thousands of rounds on the rifles. The 9mm rifles from the factory with the 4 oz buffer weights tend to get a lot of Bolt Bounce. I have 8 oz buffer weights in there to slow down the action a little bit on all of my 9mm ARs. 7.5 , 10.5 and 16 inch.
I seen some guy getting crazy groups and took it to a gunsmith (the one who made the vid) went through all the testing only to find there was no rifling!!??
I put a linear comp on one of my 16" 7.62x39 AR uppers, and my daughter was scared of it after because it was so much more "boomy" than one I have with just a birdcage on it. She actually preferred my 16" upper with a basic bird cage as it wasn't as intimidating sounding. Even on my 10" upper with a KAK mini flash can the perceived noise level is lower than with the linear comp I have. This was on a smaller linear comp (2" or so) though so maybe length makes a noise difference too.
The sound seems to Echo more because it's more directed in a single Direction and then bounces back. The sharpness of the concussion seems to be less though.
I have hit 9 inch groups at 500 from a 7.5 " barrel. The bullet is going slower so it will go transonic at a closer distance. So a 556 from a 16 inch barrel can get out to 700 yards but from a 7.5 inch , I think it is transsonic and losing accuracy by 600 yards.
From an engineering and testing stand point; is does NOT re-direct the sound (that's just a myth). The only thing a linear comp does is direct the blast gasses forward so the its less bothersome to the people in close proximity to the side of your barrel end.
So.... how do we explain the videos with people using dB level readers at shooter position having a 3dB reduction? From an engineering and testing stand point, of course.
You just said 2 contradicting statements. You said that it does not redirect the sound. And then you said that it directs the blast gases (the source of the sound) forward so that it's less bothersome. That's the same thing, lol
I can tell you from an engineering and testing standpoint, you couldn't be more wrong if you tried. I have a EXTAR 5.56 and you could not even shoot it with hearing protection on underneath a tin covered shooting station at the range. With a KAW Valley linear comp it is not an issue.
