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Posted: 12/14/2010 4:07:07 PM EDT
There has been a lot of conversation on these forums about gas settings and gas block design but not a forum dedicated solely to the release of the gas. How much psi is generated at the various settings? How much is needed? Is there a need for more settings than current? Are the current settings adequate? Is there a need for a grenade setting? Would directing the gas in another way help with muzzle rise or deflection? Is there a reason to hide the release of the gas? Is there a reason to muffle the sound of the gas release?
Link Posted: 12/14/2010 4:15:18 PM EDT
[#1]




Quoted:

There has been a lot of conversation on these forums about gas settings and gas block design but not a forum dedicated solely to the release of the gas. How much psi is generated at the various settings? How much is needed? Is there a need for more settings than current? Are the current settings adequate? Is there a need for a grenade setting? Would directing the gas in another way help with muzzle rise or deflection? Is there a reason to hide the release of the gas? Is there a reason to muffle the sound of the gas release?


Perhaps a suppressed setting and GVS.  That would be my wish anyway.
Link Posted: 12/14/2010 6:54:39 PM EDT
[#2]
An adjustable GVS would be great!
Short of that, a gas system that allows less gas into it in the first place would not need to vent as much out. Balancing the size of the inlet and outlet ports should allow reliability with less venting.
As I mentioned in the other thread, a good set of presets could be .223, 5.56 and suppressed. Another version could be offered with undersized holes and a chart of suggested starting sizes to allow custom tuning. If not too expensive, I'd buy one of the three.

ETA: Since we're talking about gas blocks and not just gas system "caps," one that's CNC-machined and without any vents designed to work with an adjustable GVS would be approaching the ultimate.
Link Posted: 12/15/2010 4:57:18 AM EDT
[#3]
Aftermarket gas blocks alone would open up the possibility of aftermarket barrels and caliber conversions.  That said, a suppressor friendly gas block with GVS would be very much appreciated.  A "grenade" setting that turns the gas completely off would make a suppressed gun even quieter.
Link Posted: 12/15/2010 4:27:58 PM EDT
[#4]
A few more setting options would be real nice. Options are nice for the end user to run the ammo they want to run at what works best for them.



I like the way it adjusts though already. I think it's a better adjustment then the ones I've seen where you need to take a bullet or some tool to adjust them.
Link Posted: 12/15/2010 5:20:44 PM EDT
[#5]
I'd like to see a design that allows rails on either side of the barrel, rather than just the left side.
Link Posted: 12/15/2010 9:04:24 PM EDT
[#6]




Quoted:

I'd like to see a design that allows rails on either side of the barrel, rather than just the left side.




Honestly, my Inventure Concepts Tri-Rail combined with my E4 top rail gives me a ton of rail space. My 9" side rail fits over the Tri-Rail as well so I can mount things pretty close to the gas adjustment over on the right side just not forward of it.





Link Posted: 12/16/2010 7:28:41 AM EDT
[#7]
Everyone wants more adjustment settings and a "gas-off" setting is great for suppressors and accuracy.

A gas block with quad rails is a seemingly obvious choice.  Just make sure it can be made to work with the AXR!

There are a few issues with this idea.  First of all, if the thing you're holding onto is hot, you're going to want to let go.  This would necessitate insulating the rails from the block itself somehow.  Secondly, I think the gas block needs to be made out of some sort of steel, not aluminum.  A one-piece quad rail gas block would be quite heavy.  Last, if you put a rail on the right side of the block where the piston is, you create the problem of not being able to get to the piston.

How to overcome these issues?  I wonder how far you could get with the idea of putting a clamp-on free float quad rail on a custom steel gas block.  BOBno1, have you seen the way LWRC uppers are set up?  The top rail is removable for access to the piston.  I think a setup like this would work excellent on the AUG, with the removable rail section flipped to the right side, especially since you could have one block and swap out different lengths of free-float rail depending on your barrel length.  If it's big enough to swallow a Noveske KX3 or a supressor, even better!

Another good idea is to make the block compatible with an existing AR-15 adjustable regulator, and to make your own piston which would use any gas rings that work with a DI AR-15.
Link Posted: 12/16/2010 7:55:22 AM EDT
[#8]
A setting for off would be interesting.
Link Posted: 12/16/2010 11:08:34 AM EDT
[#9]
My AXR has a Steyr-spec off setting for launching grenades, it's not that interesting.    It just stops the rifle from cycling and would make it quieter if you shot it with a suppressor.
Link Posted: 12/16/2010 11:16:42 AM EDT
[#10]
Quoted:
A setting for off would be interesting.


Like all Steyrs, AXRs, and early MSARs?  If you want an off setting, you can do it yourself in about 2 min w/ a small file.
Link Posted: 12/16/2010 1:17:29 PM EDT
[#11]
Every rifle has a negative to it and one of ours is the gas port flash.



Even with a quailty flash suppressor on the muzzle you still have the flash of your gas port giving your position away. I've had the opportunity to do a couple of night shoots and the gas port flash is definitely present and absolutely visible. It's kind of an issue. A DI AR has much lower signature when firing with the same flash suppressor.



So anything that reduces the gas port flash signature is a BIG plus and worth the investment IMHO. A gas valve system that takes it down even slightly is something I'd drop money on provided it's not insanely expensive.



I'd love to see a new gas block, because that means I'd have someone to fit that new gas block to a new barrel and with all due respect to MSAR and Sabre it is possible to get a better barrel then the ones you get stock with the MSAR and Steyrs. Now, that's not a knock to either company, because obviously you can only go so uber fancy before you price your product out of the market for most folks. Plus, I've always thought that while the MSAR gas block is adequate that a more higher quality one could be produced in terms of finish.



I know a lot of us have reached the point now where we've had our AUGs, AXRs, STGs, and E4s for awhile now and are looking to custom things up a bit and play around with them. Especially as we're seeing new production methods out there becoming more established.
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