M11/15 Prototype

[ScottinTexas]

I remain confident that Lage will do the right thing and buyers will suffer no consequences.

The Akins device and this upper are completely unrelated in function and intent. Obviously Lage thinks so too.

 

[lokifox]

I think the point is that the BATFE operates on their own terms.

I'm patiently optimistic.

 

[Captain murrica]

No worries whatsoever with me. Build it, sell it, I'm you're huckleberry.

https://youtu.be/R-JjNp2aXys
And I'm gonna feel as cool as doc holiday when I'm dumpin mags!

BTW Fostech made the AA2 springless accelerator seen right here on UT
http://www.uzitalk.com/forums/showt...-Akins-Accelerator-2-springless-*with-videos*

 

[M16er]

I too got on the list, under 200 then found out it was for M11 not M11A1. Gave my spot up. If it does go into M10 M11A1 production, I hope I get added to those lists.

 

[IndustrialRescue]

You must not be aware of the Akins Accelerator story. He, too, had not one but TWO BATFE approval letters, had gone into production and had sold around 200 units before BATFE arbitrarily changed their minds and issued a "cease and desist" order, along with a demand for the names & addresses of all of his customers.

Everyone had to surrender the springs from their stocks, and Tom was devastated financially. It was a classic example of utter lawlessness on the part of a government agency answerable to no one and operating from a position of fear and intimidation.

https://www.usconcealedcarry.com/mr-bill-akins-and-the-akins-accelerator/

Historically, the Tech Branch has looked unkindly on conversions that allow pistol caliber receivers to fire rifle caliber rounds. I was pleasantly surprised when the S.A.B.R.E. was approved...and then remained approved.

He had approval letters for an SKS stock. Not his 10/22 stock with a spring. Quit defending the idiot.

 

[gt3499a]

Has anyone done a spade grip for MAC style receiver commercially? I wonder if a KNS could be adapted?

Scott

dont know of one but here is one m10 solution that someone posted in the past



this isnt mine, apologies to forum member ? if they dont want it here

 

[gotgraham]

The KNS setup would mostly work out of the box. Remember, the M11/15 requires the AR buffer tube and the KNS spade setup uses the AR buffer tube to mount. The only part that would be custom would be the trigger linkage - which would be super easy.

 

[theduke]

spade grip thread.. http://www.uzitalk.com/forums/showthread.php?29099-Spade-Grips-for-m11-available

 

[West_Texas_King]

The one thing I had not thought of is the water around the gas tube reduced the volume of the gas going to the bolt group. I had to open the gas port in the barrel three numbered drill bit sizes to get the action to function with the jacket full of water.

I wonder, does this keep the BCG a little cooler, having the DI gas essentially chilled before it reaches the gas key on the carrier?
Any observations as to less or more carbon residue as a result of those gasses being cool?

 

[Ericoak]

Looks like the ATF just reversed itself and declared silencer wipes to be banned, and is forcing Dead Air Armament to cease sales of wipes.

 

[LawBob]

Looks like the ATF just reversed itself and declared silencer wipes to be banned, and is forcing Dead Air Armament to cease sales of wipes.

They don't have to Cease sales. They just aren't user serviceable and lowers the uniqueness of their product.

 

[Ericoak]

They don't have to Cease sales. They just aren't user serviceable and lowers the uniqueness of their product.

I said they have to stop sales of wipes.

 

[chili17]

lets stay on topic, please

 

[A&S Conversions]

I wonder, does this keep the BCG a little cooler, having the DI gas essentially chilled before it reaches the gas key on the carrier?
Any observations as to less or more carbon residue as a result of those gasses being cool?

There is no significant cooling factor of the gas going into the bolt group. Especially when you pound 500 rounds through the upper in less than a minute. I can tell you, it is hard on the gas rings. My test for gas rings is, with the bolt carrier group out of the gun, pull the bolt forward away from the carrier, then place the bolt group upright on a level surface. If the rings are tight enough to hold the carrier up, they are okay. If the rings can't hold up the carrier, it is time to replace. That 500 rd burst wore out a new set of rings. I was thinking of trying the heavier one piece rings in the water cooled upper.

I used Federal green tip for the 500 rd burst. I lubed the bolt group very heavily before the start. It was pretty black afterwards. If anything, it might be a little dirtier. With the volume being reduced because the gas tube went through the water, the gas port had to be enlarged. This would put a bigger percentage of the propellant gas into the bolt group. So more propellant gas means more powder residue in the receiver.

Scott

 

[thelastdinosaurs.com]

m10 version is not an issue, I've got a design for a 308 nato upper for the m10 too that uses dpms style mags / parts.

This? Has anything come of the .308 upper?

 

[West_Texas_King]

There is no significant cooling factor of the gas going into the bolt group. Especially when you pound 500 rounds through the upper in less than a minute. I can tell you, it is hard on the gas rings. My test for gas rings is, with the bolt carrier group out of the gun, pull the bolt forward away from the carrier, then place the bolt group upright on a level surface. If the rings are tight enough to hold the carrier up, they are okay. If the rings can't hold up the carrier, it is time to replace. That 500 rd burst wore out a new set of rings. I was thinking of trying the heavier one piece rings in the water cooled upper.

I used Federal green tip for the 500 rd burst. I lubed the bolt group very heavily before the start. It was pretty black afterwards. If anything, it might be a little dirtier. With the volume being reduced because the gas tube went through the water, the gas port had to be enlarged. This would put a bigger percentage of the propellant gas into the bolt group. So more propellant gas means more powder residue in the receiver.

Scott

Interesting, it does make sense. While it may not cool the gasses, I bet it probably keeps the gas tube from overheating at any rate.

 

[A&S Conversions]

Interesting, it does make sense. While it may not cool the gasses, I bet it probably keeps the gas tube from overheating at any rate.

Is there a cooling effect? I'm sure there is or I would not have had to open up the gas port to increase volume. But that temperature drop was only a few degrees as the port size was increased by a few thousands of an inch to increase volume for the temperature drop. With over a gallon and a half of water around the barrel and gas tube and another five gallons on the ground with an outboard fuel squeeze bulb as a pump to circulate the water, I don't know as I could afford enough ammo to boil that water away. Yes the gas tube is very safe in the water.

I have found that the limiting factor with a water cooled DI upper has been powder residue in the receiver gumming up the mechanism. Depending on ammo around 800-1,000 rds of use I pull out the bolt/carrier assembly and give it a quick clean and wipe down the inside of the receiver. A piston set up would be cleaner but that would need a gas vent in the middle of the water jacket.

One of my "back burner" projects would be to set up an AR trigger frame for roller locked guns with a KNS spade grip and make a roller locked water cooled host with a 20" barrel. The roller locked mechanism would be cleaner than DI. I also think the roller locked mechanism could be adapted for use with the Valkyrie Armament belt feed mechanism. But that is well beyond this thread.

Scott

 

[mak91]

This? Has anything come of the .308 upper?

I've got the aluminum and some of the parts I need. Its still a ways out and a topic for a new thread M10/08 when the time is right.

 

[supperman]

I've got the aluminum and some of the parts I need. Its still a ways out and a topic for a new thread M10/08 when the time is right.

 

[sardo_67]

This? Has anything come of the .308 upper?

THIS X1,000,000! now THAT I wanna see!

91, any plans on making stuff for the M11A1?