A recent article by GearScout about a new adjustable gas block has piqued my interest. The new gas block can be seen here.
I know the general consensus is that adjustable gas blocks should not be used for a hard use, “go-to” type of weapon, but does this new offering bring anything to the table that would change that opinion?
I was thinking that this could be an option for someone who wants to achive a more “optimal” setting for use with a suppressor and just leave it be once adjusted…any thoughts?
I’m not an expert on the subject matter but I don’t see why you couldn’t use it with a go-to type weapon. The first thing that comes to mind is the Noveske Switchblock.
This looks like a good option as you stated in a suppressor setting. It’s non-obtrusive. The detent looks like it should do it’s job.
I have one that I use with a suppressor and it works as advertised. I used it to replace the pri adjustable one that I had on before. The pri one would always become loose in its setting so I had to always adjust it. Now with the Syrac one the setting stays no matter what. The only thing is you will need to use two long hex keys to adjust it but it comes with them. Once I get my Magpul ACS I will be able to store the hex keys in the storage compartment for the batteries.
Awesome man thanks for the report! Have you gotten a chance to use it pretty hard yet? How many rounds through it, ect?
Also, does the adjustment screw have a “stop” so that the screw doesn’t screw out of the block? I would think this should be common sense, but I just have to ask…
I ran about 200 rounds through it suppressed. It performed flawlessly. If I had used the PRI gas block I probably would have gotten to 60 rounds before it lost its settings as that was what was happening before I changed it out.
The adjustment screw DOES NOT have a stop and it also has a warning in the instructions to not back out the set screw all the way. However I did not read the instructions and backed it out all the way… lol. I figured out how to reinstall it and seeing how it actually worked was pretty cool.
Hmmm not so sure I like that fact there…do you see it as a negative? How well does the detent lock work? Any worries?
Also, when you screw the adjustment screw all the way into the gas block, does that “shut off” the flow of gas basically turning the rifle into a single shot? Then you adjust the flow of gas by unscrewing the screw, correct?
It’s the best solution if you want a low profile adjustable gas block that will not move without your intervention. The way it works is pretty ingenious. I wouldn’t worry about it if you plan on getting one. The detent is pretty strong and takes a good amount of force to press so it will not move on its own.
Yes when you screw it all the way in it shuts off the gas and turns the rifle into a single shot. I have tested it and it works.
The set screw is pretty long so you have a good range of adjustability before it comes out. I wouldn’t hesitate to buy another one for my other suppressed rifles.
I think you’ll love the Syrac blocks. Once you have adjustable gas, a whole world of opportunity opens up - especially rock solid adj. gas.
I’ve had 3 running great for 6mo or so. Once dialed in fully for reliability, some rifle configs are more/less noticeable. I use all Noveske barrels, so they’ve got the gas ports pretty dialed from the factory, but on my 308 and my 10.5, I was able to drop the gas down some more, use stronger springs to keep the action cycling fast enough etc. I have not used them for suppressors yet, but they are not exactly a “quick flip” like the switchblock is. Pros n cons. Switchblock is very fast and fool proof, but may not be perfectly dialed in on any particular setup. The Syrac takes some concentration, daylight and two steady hands to make an adjustment.
Originally Posted By Zestar:
With my block on, and screwed all the way in, it does not completely stop the flow of gas. It is not enough to cycle the action unsuppressed, but with suppressor on, I am getting more gas than I want. With suppressor off, 6 clicks from bottom gives me the right amount of gas. Is this normal? I was expecting I’d need to back it out quite a ways. It is on an 18 inch 6.5 Grendel, with mid-length gas system.
SYRAC ORDNANCE :
I have recently reduced the gas hole size in the gas block that should help you obtain the results you are looking for. Email admin@syracordnance.com for an RMA if you want to swap your block for the new one.
I plan on trying one of these also but the ones with the smaller gas hole were not back from the melonite process yet (last week).
This gas adjustment thing has become huge for me. I’ve recently corrected guns that I’ve owned for YEARS.
I’m just astonished at how much nicer the weapon runs when the gas is set right… I mean… I have old aftermarket uppers that always have run reliably…but still over gassed and just way too bouncy to shoot fast.
I have this piece of shit bushmaster 14.5 that’s running like a Town Car now.
Yep. I think the carbine-length 14.5/16s out there are the most noticeable with adj. gas. So many are overgassed and kick like mules. One of my first ARs I bought was a carbine gas Bushy back in '97 or so… Lovely, reliable, heavy barreled tack driver. I sold it years ago, mainly due to being a Noveske snob and it was horribly overgassed - to the point of other shooters commenting on its kick. I wish so bad I could get that thing back now and throw a Syrac on it. I loved that rifle.
I read something about the first runs not being able to fully stop all of the gas, but that in December a small change was being made and any new ones will block 100% of the gas.
Don’t ask about where to get new ones and how to ID them - I don’t know. Best talk to Jason, the owner. Good luck getting a response though.
Please post what you find.
