Gas block / pressure on barrel??

[PlinkIt]

Question concerning pressure applied to barrel on an ar with a gas block such as a set screw style..

Is this enough to make a difference down range?

What is the best direction to go for a solid gas system while applying as little pressure to the barrel as possible?

 

[DavidAR10]

 

[PlinkIt]

very nice looking unit!

got any info on it I can get on it?

 

[MarkCO]

That is an SLR, reportedly a very good adjustable. In our testing of various gasblocks, we found issues with most of them due to leakage, point stresses, and outright failures. As a result, we designed our own to mitigate the failure points and leakage.

 

[PlinkIt]

That is an SLR, reportedly a very good adjustable. In our testing of various gasblocks, we found issues with most of them due to leakage, point stresses, and outright failures. As a result, we designed our own to mitigate the failure points and leakage.

ok so how do I clarify if a unit has points of stress? I assume you are referring to the stress on the barrel I was asking about originally when saying point stresses???

 

[MarkCO]

ok so how do I clarify if a unit has points of stress? I assume you are referring to the stress on the barrel I was asking about originally when saying point stresses???

You can model it in an FEA program. Yes.

 

[PlinkIt]

You can model it in an FEA program. Yes.

ok so you guys have come up with the engineering to minimize this by turning the clamping force area 90 degrees? (I was trying to look at your gas blocks on your site)

is there any... simple science explanation... for how that helps the stress???

 

[MarkCO]

ok so you guys have come up with the engineering to minimize this by turning the clamping force area 90 degrees? (I was trying to look at your gas blocks on your site)

is there any... simple science explanation... for how that helps the stress???

No set screws is part of the solution. The geometry and tolerances are the rest. It is also sized for FFTs so that you can actually clamp against the shoulder.

 

[Adam B]

Mark, I am curious why you did not see a need to make your adjustable?

 

[MarkCO]

Mark, I am curious why you did not see a need to make your adjustable?

Several reasons. First, as anyone who shoots a lot will understand, adjustable gas blocks have all kinds of failure issues. Second, even "adjusted" and locked in, after several thousand rounds, the gas cutting has "opened" up and the volume has increased. When I went to rebarrel rifles and examined the gas blocks, they were basically wide open. Third, a protrusion into the gas stream always seemed silly to me, especially when it is eroding and sending metal particles towards your gas rings. As a result, I chose to go with a barrel with a smaller gas port diameter, the Nordic 18" Competition, which I designed. Combined with the proper selection of carrier, buffer and spring, even some load tinkering, you get a significantly more reliable system with all the benefits of less gas.

I really looked at adjustable gas as a band-aid for over-gassing. My thought was, why not just cut the gas volume at the source...the barrel. That is what we did.

I was really excited when the Syrac came out, but the failures were soon, and I got rid of them. The SLR appears to have solved some of these issues, but I have not yet tried one. I plan to try one on a .300BO or maybe even the .450BM/C.

 

[Adam B]

makes sense to me, I have had issues with adjustable gas blocks in the past and am looking for one since I shoot with a suppressor some of the time