Best adjustable gas block?

[Sniper338]

Im in need of a low profile adjustable gas block... .936 for my grendel.. got 1.75 inside diameter on my handguard... whats the herd say is good to get?

[82HALO]

Really like the SLR on mine! They do make them in all sizes!

[NugginFutz]

Just got through this on one of my Bull Barrels. I changed the hand guard to an M-Lok, low pro and my AGB wouldn't fit.

I ended up with a Superlative Arms bleed off type. I like that it adjusts from the front, so as to avoid disassembly while tuning.

[PVBoom]

In AR-land there are a lot of SLA fans. Superlative Arms fans also. I ordered an SA and a Seekins. No experience yet (not built).

[molar]

Really like the SLR on mine! They do make them in all sizes!

SLR is best no doubt

[Sniper338]

This is kind of what I thought..

SLR or superlative...

where as the superlative is no where in stock anywhere Ive found them, plus I keep reading loss of velocity stories do to the bleed off instead of restricting flow of gas.

leaning towards the SLR .936 standard one... not the titainium... as weight isnt a factor.

[Bigs28]

What handguard do you have? The brigand arms is 1.75" diameter and being that it is round their isn't the channel at the top to accommodate the size of some of the gas blocks. A slr only leaves 0.077" of space between the top of the gas block and the ba handguard which i feared was a little tight so I chose the superlative which gave a little more clearance. If you have a handguard like midwest industries suppressor compatible with 1.75" diameter your fine.

[NugginFutz]

This is kind of what I thought..

SLR or superlative...

where as the superlative is no where in stock anywhere Ive found them, plus I keep reading loss of velocity stories do to the bleed off instead of restricting flow of gas.

leaning towards the SLR .936 standard one... not the titainium... as weight isnt a factor.

They were in stock a mere three weeks ago, so I think Santa's elves are busy stuffing stockings for all the good little hunters.

I've also read where MV can be slightly affected, but there is an answer to that.

For the first 4.5 turns, the Superlative works the same as any other adjustable gas block, restricting flow. In this range (where I set mine) no gas is vented and, therefore, no loss of pressure in the bore.

At 4.5 turns, it is wide open - aka normal gas block.

From 4.5 on, it progressively vents gas forward. This is where some minor MV loss has been reported, but people with suppressors seem to enjoy this aspect the most, as it reduces back pressure, of which a significant portion ends up in the receiver or ones' face.

Aside from that, the biggest thing I like about this is that the adjusting screw doesn't actually block any hot gasses and so does not erode like a couple of other AGB's I've had.

One other option to consider is getting a regular low profile .936" gas block (abundant, right now) and go with a Rubber City Armory adjustable gas key. I had to do this on one rifle, as the handguard was just this much too small for any adjustable gas blocks I could find. Still working like a charm after 2.5 years.

[jackwagon]

https://suparms.com/collections/adjustab...tte-finish

[StoneHendge]

I have SLR, JP, Odin and Superlative adjustable gas blocks. The Superlative was the last one I bought, and it will be the only brand I buy in the future. The bleed off helps with both recoil and system timing

[chowser51]

Built mine with the superlative arms bleeder. Will test fire this weekend using my 762SDN6.

[ItsRainingLead]

I went with Superlative Arms. I like that it has a bleed option if/when I put a can on, and a restrictive option just like any other adjustable block.

[chowser51]

Only test fired 60 rounds. I have the bleeder set at six and a half turns out from completely closed. It cycles every round suppressed and unsuppressed and locks back empty. I will have to get a chrono and see what the velocity loss is from 4.5 turns to 6.5 turns. Using a 12” Faxon barrel and AAC 762SDN6.

[munchie3409]

I've only ever used the SLR.

[tracker12]

Will the Superlative Arms fit a FF Forearm.

[Sticks]

Will the Superlative Arms fit a FF Forearm.

A more specific question is what is the outside dimensions of the block?



If you know the inside dimensions of your handguard, this will answer any fitment questions.

[Bigs28]

He's looking for a .936. That's a .750 but the information is out there for whatever gas block he looks at.

[Sticks]

He's looking for a .936. That's a .750 but the information is out there for whatever gas block he looks at.

[NugginFutz]

Will the Superlative Arms fit a FF Forearm.

That really depends on which had guard you're referring to. If you are talking about the classic aluminum tube, then yes, it should. If one of the slim profile M-Lok or KeyMod hand guards that have become so popular, then it all comes down to the interior profile of that particular hand guard.

Another thing to consider is that Superlative's clamp on version has a slightly different profile than their set screw block. In order to accommodate the screws, the clamp on block has a slightly wider profile at the bottom.

I will tell you this, though. A Superlative clamp-on Adjustable Gas Block for a .936 barrel will NOT fit under a Caldwell free float hand guard. Of this, I am certain.

[Chance-dg]

I have SLR, JP, Odin and Superlative adjustable gas blocks. The Superlative was the last one I bought, and it will be the only brand I buy in the future. The bleed off helps with both recoil and system timing

I just placed my order with Brownells for my first 6.5 Grendel upper build around a GB 16"barrel and bolt. It will consist of:

BCM M4 upper receiver assembly , FDE BCG w/ GB Type 11 bolt and MCMR 13" MLoc handguard.
Superlative Arms .750 solid Melonite adjustable gas block
Spikes Tactical mid length gas tube Melonited for no glare
Raptor Lt Ambi charging handle
EGW thread protector

This will go on the lower I built for my Sig 516 and my ARStoner 20" 6.5 Grendel upper.

this lower is built around a:

AeroPrecision Gen 11 lower
BADASS Ambi safety
Geissele enhanced 2 stage 3.5 lb trigger group
BCM SOPMOD adj.stock
Geissele LPG
Glove friendly bolt release and winter profile Velocity trigger guard
Carbine length Buffer Spring and H2 Buffer

I am currently using a Nikon P223 3 x 9 scope and mounts and have both a Leupold VX3i 3.5 x 10 and a Leupold VX6i 2 x 12 x 44 mm sitting in the gun room to use depending on hunting location and upper choice.

This is my first adjustable gas block and I feel I made some good choices here.

I cant post new threads due to a laptop security glitch so this long post concerning the gas block. All advice would be helpful please