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Posted: 1/22/2006 9:33:15 PM EDT
Sat down behind the design software and put this together. The drawing shows the conceptualized version of a low profile gas block for the AR-10. It is intended for use on 0.875" diameter barrels (at the gas port) but could be adapted for use with 0.75" barrels.

As shown, it uses a 4 position manifold operated by the small diameter knob shown on the front. The manifold has a ball plunger for indexing and the four different port positions are
Off - no gas for use with subsonic loads and suppressor - quiet mode
Low - smallest port for use with standard loads and suppressors - to prevent "over gas"
Normal - typical port for use with standard loads, no suppressor - your "every day" mode
High - largest port, for use with subsonic loads (and suppressors) - to get enough gas to cycle



Several professional end users had commented on the problem with platforms that would do one or the other but not both and we felt that this would serve a nice purpose.

It comes with the gas tube permanently installed but can be fitted with any length tube and any end user with decent mechanical ability and some tooling could do the work. Held in place with 3 set screws but could be retrofitted for use with pins. 6061T6 aluminum with stainless internals.

In the design process we may have also stumbled across something even more interesting for adjusting gas flow to the port....

Oh yeah, with tube installed, these would go for about $75 ...
Link Posted: 1/22/2006 10:17:15 PM EDT
I'd like to hear more
Link Posted: 1/22/2006 10:40:32 PM EDT

Originally Posted By dablues:
I'd like to hear more





+1



Very interested!
Link Posted: 1/22/2006 11:24:23 PM EDT
Marty....Bring thre proto to SHOT.

Simon
Link Posted: 1/23/2006 1:00:57 AM EDT
Why is the gas tube a perm install? Be sure to leave enough meat around the gas tube area so it can be converted to a LW pisotn set up.
Link Posted: 1/23/2006 7:36:25 AM EDT
That sounds like a great idea. I know the Armalite SASS submission had an adjustable gas block of some sort.

For $75 or so, I would buy one for my AR10.
Link Posted: 1/23/2006 7:43:52 AM EDT
Link Posted: 1/23/2006 4:23:01 PM EDT
Link Posted: 1/23/2006 8:22:48 PM EDT

Originally Posted By sniperx:

Originally Posted By DevL:
Why is the gas tube a perm install?




I would venture to guess that the gas is going into the end of the tube rather than a hole in
the side of the tube.



You get a cookie!

Actually, we're working on a Gen II version that will allow just about ANY gas block to be turned into an adjustable gas block. Meant for use with the AR-15, we think we can make it work with the AR-10. Proto for that will be in my pocket at SHOT. This version show here will only be made if enough interest (20 folks) exists.
Link Posted: 1/23/2006 8:28:38 PM EDT
any chanch of getting one for a .936 diameter, if so count me in,
Link Posted: 1/23/2006 8:35:23 PM EDT

Originally Posted By MartytW:
Proto for that will be in my pocket at SHOT.



So how do we find you at SHOT? I take it you won't be at a booth if these are in your pocket. Or will you have a booth? The exhibitor search is currently offline on the SHOT website...
Link Posted: 1/23/2006 9:41:49 PM EDT
I will take one. Cash at SHOT. Howzabout that......and I got you the stuff you wanted.

Simon
Link Posted: 1/23/2006 9:50:57 PM EDT
No booth this year at SHOT, as I have to be in the Rock River Arms booth to aide in the public introduction of their licensing of our .458 SOCOM. So that will also be the best place to find me (daily around 10AM and 2PM). I will also be frequenting the MGI booth (23094 IIRC) and they may have some goodies you might want to see. If all else fails, I will have my phone on (832) 524-8100 and look for a poster child for the Marine Color Guard (6'6", blonde h-n-t, blue eyes) wearing a shirt with either Teppo Jutsu or .458 SOCOM on it. I could be like another ARFCOMMER who said "I will be in the Law Enforcement section wearing Merrell's and 5.11 pants ...)

The gas block shown will be for .875 initially but should be adaptable to 0.936. The Gen II will work with standard 0.875 and 0.75 barrels only. We took a closer look and Gen II will also likely be initially focused on the A2 style FSB. In addition, working on one more minor item that should help those shooting with cans attached (think crud)

Simon - as they will be prototypes, not sure I can part with them. But we can talk about getting them in your hands. And "bij voorbaat dank" for the goodies.
Link Posted: 1/23/2006 10:03:00 PM EDT
'Hey...you wanna see what I have in my pocket?'.....

Marty's perfected his rail mounted SiroopWaffeln holder. Perfect for when you get the munchies on the firing line. A mag dump will get it all warm and sticky.

Simon
Link Posted: 1/23/2006 10:20:40 PM EDT

Originally Posted By SimonTan:
'Hey...you wanna see what I have in my pocket?'.....

Marty's perfected his rail mounted SiroopWaffeln holder. Perfect for when you get the munchies on the firing line. A mag dump will get it all warm and sticky.

Simon



Hmmm.... stroop wafels ....
Link Posted: 1/23/2006 10:29:51 PM EDT
They sell them in Houston right? Perfect for dunking in coffee.....

Link Posted: 1/24/2006 8:34:43 AM EDT
coool, then count me in for eon, ill have to watch for them
Link Posted: 1/24/2006 8:35:30 AM EDT
[Last Edit: 1/24/2006 8:35:56 AM EDT by m4hk33]
opps dupe post
Link Posted: 1/24/2006 4:53:58 PM EDT
I'm in!
Link Posted: 1/24/2006 8:57:36 PM EDT
Count me in for at least one.
Link Posted: 1/24/2006 11:21:35 PM EDT
Link Posted: 1/24/2006 11:57:50 PM EDT
Randall....don't you hijack MY GAS BLOCK......

Simon
Link Posted: 1/25/2006 5:24:47 AM EDT
Link Posted: 1/25/2006 8:32:28 AM EDT

Originally Posted By SimonTan:
Randall....don't you hijack MY GAS BLOCK......

Simon



Both of you had better beat me to it.....

I've got Randall doing an adjustable block for me using a Larue low profile, but I really like this block. The only question is whether it could be adjusted while completely covered by a rail (Larue in my caes.) Anyway, I just sent in my payment, so I imagine this block will be available before he is ready to begin on my 300 Whisper project. It may work out, we'll have to see.

I also need one for AR10.

That puts me down for one for sure (AR10) and possibly two. My AR10 has the Larue 13.2 rail, so I think the gas knob would still be accessible.......
Link Posted: 1/25/2006 4:06:24 PM EDT
Marty...I bring CASH and Stroop waffels.....(HA BEAT THAT!)

Simon
Link Posted: 1/26/2006 7:18:22 PM EDT
OK, here is the latest. Doesn't look like the prototypes will be done by SHOT, I forgot about my day job (oops ) and that Month End is here in a few days. (Goodbye shop time for a week)

Gen I is being made, about 20 of them. Those that will cover them completely, they can be modified to use a socket head cap screw so that a long allen wrench could do the job of adjusting.

Gen II is being worked on, might be Pat. Pend. if it works out. Plan to make a version 1 - kit and version 2 - ground up

Gen III is on the drafting table, COMPLETELY different but interesting perhaps. More for very specific applications ....

Link Posted: 1/26/2006 8:00:55 PM EDT
Damn.....oh well...the first is still MINE along with first dibs on the Gen II and III.

Simon
Link Posted: 1/27/2006 11:31:45 AM EDT
Link Posted: 1/27/2006 10:00:29 PM EDT

Originally Posted By SimonTan:
Marty...I bring CASH and Stroop waffels.....(HA BEAT THAT!)

Simon



I'll bring cash, CASES of beer, and beer schwag!
Link Posted: 1/27/2006 10:26:18 PM EDT

Originally Posted By Scollins:

Originally Posted By SimonTan:
Marty...I bring CASH and Stroop waffels.....(HA BEAT THAT!)

Simon



I'll bring cash, CASES of beer, and beer schwag!



OK, so we have cash, candy, beer, all we need is chips, dips and chicks ... its a party

But seriously. Gen I is being worked on. Gen II is getting some more design. Gen III is getting whackier by the minute ... gotta put the Dew down ...
Link Posted: 1/27/2006 10:43:16 PM EDT
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