I'm looking for a low profile, light weight, 0.75" dia adjustable gas block.

It will be installed on my full auto mk18 which I run a trek-t suppressor on 99% of the time. My goal is to reduce gas to the face, keep the internal parts cleaner (if possible) and adjust the ejection pattern. Right now I'm using a H2 buffer to solve the over gassed issue but would prefer to just use the appropriate amount of gas instead of messing with heavier buffers.

Thanks in advance!

SLR Rifleworks has, or is coming out with, a titanium adjustable gas block.

I've had no complaints on my syrac gen 2. I like the detent setup requiring only one tool.

MicroMOA that used the plates is probably the best option but costly.  The ones that used a set screw with a brass locking screw like Seekins (and now the many cheap generics) or the ones that have clickable settings from the front would work also.  Anderson is making the cheapest one of these now ($58).

I have a Syrac Gen II as well.     Easy to adjust, does its job well and was simple to install.

Very happy with its performance so far.    Much less gas to the face, and my action stays much cleaner.

It will be used on a transferable MG so coat at this point is no issue. Just need function and durability, I don't run my MG until the barrel starts to glow or anything extreme like like that but it's nice to know it can handle it if I did.

I have one the MicroMOA uppers on a transferable M16 and have really like it.  I plan on buying another one in the future.

I used to make my own adjustable set screw type gas blocks years ago before a bunch of manufacturers jumped onto the adjustable gas block bandwagon.

The biggest benefit on the MicroMOA units is that they are quick change and require no tools.  You slide the plate with a bullet tip, one "click" and you are dialed in for suppressed, non-suppressed, or adverse (or what I call the "wolf ammo") setting.  No looking for an allen wrench, no remembering how many turns or clicks this way or that way, what was the last setting from a prior range session, etc.    Just one quick look at the plate and a push of the plate if you need to change and you are done.

The only downside I have found is that the MircoMOA blocks do spit out a small amount of gas and crud to the sides.  If you want to put the gas block under a rail and then reach up and wrap your hand around the rail costa-style where the gas block is, this block may not be for you as you are going to get stung on your bare hand vs. unlike a set screw type block where almost nothing escapes except down the gas tube.    I run a VFG on my M16s so its a non issue for me as my hand is way underneath the rail.

If I was building a precision rig or something with a permanent suppressor I would probably buy a nice set screw block, adjust it and dial it in once and just leave it.  However, if this is a gun where you are going to be taking the can on and off, the Micromoa offers much more flexibility to quickly switch settings.

Hmm your last comment describes what I'm doing best. Planning to dial it in to the correct amount and then rocksett the direct thread suppressor and never touch it again. Sounds like a block with a screw adjustment may be best. I'm looking at a Wilson combat right now, seems to be the same size-ish as the Troy low profile block I'm already using. The Syrac gen ii looks nice but like the Wilson combat have to be adjusted from the front which I would have to remove my suppressor each time. Do they make a similar block that adjusts with a screw from the side?

Or dial it in with out the rail attached?  That's how I dialed all mine in.

I uesd a Seekins on my 300Blackout build.

I would have suggested the MOA GovNah too, until I read where you wanted to dial it in and then Rockset it.  If I were going to do that I wouldn't spend money on an adjustable.......I'd go the Baby Govnah and size the port to what works for your condition and be done with it.  Fully agree with the statement that needle pointed adjusters wear out rather quickly and allow more gas over time.  I used to have that problem shooting Highpower competition..........would imagine that full auto would only exacerbate that problem.

No, I said I would have suggested the Govnah, until I saw that he wants to "dial in and Rockset" the adj. gas block. (his words, not mine)  If you're going to Rockset an adjustable gas block then I see no reason to go with an adjustable.....just get the Baby Govnah and size the hole for the conditions and be done with it.  Any adjustable block that uses a needle type adjuster is going to suffer wear from gas erosion and gradually allow more gas to pass than what the initial setting allowed, especially running full auto often.

I have one of the microMOA blocks and it really is great. I will second the complaint about the gas discharge though. My hand was pretty dirty after the first range trip so now I use a glove.

I didn't come across the micro moa when shopping for mine about 8mo ago but the SLR is great. They're constantly making small improvements to the design too, which I like. You do have to adjust it with a hex wrench but it's pretty easy even under a KMR. I really like the fact that the end user can easily take it apart and clean it.

He wants to Rocksett a direct-thread can onto the barrel. Not Rocksett the gas block.That is why he said an adj. would work because he is making it a dedicated rifle for suppressed shooting.

OK, I admit, my reading comprehension needs a tune-up.

I see nothing as to what kind of FF tube is to be used with the Govnah adj, or do you have to cut the slot for the adjustment?

I would try slr sentry 7, Hear they're the best on market. I wouldn't get a syrac, customer service isn't too good.

In other words, I either have to buy a new FF tube, or grind mine out to do any adjusting.
Don't think so.

I don't think you mentioned which rails you are running...

The RRA half quad, and the gas block is under the tube.

And therein lies the problem.

Correct, the rocksett will be used on a thread on suppressor, not the gas block.