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?
Best adjustable gas block?
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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.
If it's true that we are here to help others, then what exactly are the others here for?
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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.
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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.
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Originally posted by Sniper338 View PostThis 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.
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.If it's true that we are here to help others, then what exactly are the others here for?
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