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Post by 22boomer on Nov 11, 2011 6:07:01 GMT -5
Not that this has anything to do with your design but I did a Pistol Length piston systom on my 22 Reed Express carbine that needed a mid-length hanguard. I trimmed enough material off the top of the piston gas block to allow regular midlength handguards to fit. I don't know if this would work well with your setup but there are nice railed handguards that would give enven more room on top -- unless you are going for the pop-wrap look.
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Post by HMC710 on Nov 12, 2011 8:57:12 GMT -5
Yes, it is a 9mm. C/CP = Colt / CProducts mags but I think I'll change the ID to 9mm CUZI. Both piston set ups have been running for a year, just no time or money ( where did I just read that?) to bring them up to Production Status. The last 2 months have been running tests with 9mm and Tok using the same port set up ( ) which means the same barrel profile and the same major piston components. Have also run successful tests with the Tok piston barrel with a DI gas block in place for the anti-piston guys. After running the Tok surplus with our piston set up tho I don't care to go back to a stock gas system. The fume venting alone is worth it to me, not to mention the cleaning. Like I posted on arfcom a while back, "My money is on the piston." With the V3 set up the gas block is 100% adjustable but I have not run any Tok Sub loads yet, just other calibers. The goal of the V3 was to verify repeatability of the V1, verify the module concepts, and have as many common parts as possible. All of that has been done, but I reserve the right to tweak here and there. Are they ready to go? I am working on final construction prints, materials selection, and some sourcing. How much? As absolutely competitive as I can make them. See GW, I told you so......
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Post by 22boomer on Nov 12, 2011 9:13:59 GMT -5
I went back and re-read the whole 6 pages of this thread and didn't realize this project has been going on for over a year. I forgot about the videos and stuff. It's good to see the project has gotten to a point it may be hitting the market soon.
I did, at one time, actually use the newer Magpul MOE handguards with that gas piston setup I had. It seems that Magpul realized that piston setups were getting popular and that their handguards were not tall enough to allow the piston stuff to fit under the top half of their guards so they did a little redesign. I don't think this has any value to you but I thought I'd mention it.
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Post by HMC710 on Nov 12, 2011 10:07:11 GMT -5
Yea, time flies...... Some HG work and some do not, as the pics a few pages back show. Working on it.
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Post by 22boomer on Nov 12, 2011 11:09:16 GMT -5
Yea, time flies...... Some HG work and some do not, as the pics a few pages back show. Working on it. That would really be good if your setup is pretty much handguard friendly. I had a hell of a time trying to find handguards that were usable and would fit over the piston gas block.
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Post by greywuuf on Nov 12, 2011 13:26:45 GMT -5
Well Dag nab it, I am going to have to read this whole thread now because I am lost. And to think I just committed to a DI gas set up. I was really late getting into AR's as I was busily building FAL's because I like the piston and adjustable gas blocks.
GW< *mutters to himself as he starts digging out FN parts and tearing apart the garage looking for an absent tail stock*
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Post by HMC710 on Nov 25, 2011 15:15:06 GMT -5
Just ran some surplus 9mm Largo (low powered 9x23 Win) through the 9mm gas system. Had power to spare!
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Post by 22boomer on Dec 5, 2011 9:01:29 GMT -5
I got a question about the 9mm piston setup your working on. I don't have a suppressor but I've always noticed the increased amount of gas that is released from the vent holes on the carrier when a round is fired in a suppressed 9mm AR and figured this must cause a bit of unwanted noise. Does your piston setup also have a vent that would be under the handguard or is it more like the closed type piston used in the M1 Carbine? I don't mean is it designed like the carbine but is the piston vented or non-vented?
I know that some people like piston setups and some don't but for a suppressed operation I would think a piston would help in noise reduction and also help keep the operating parts in both the lower and upper cleaner.
I guess these are just stupid questions but since the 9mm seems to be the favorite for supression I kinda wanted to know.
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Post by HMC710 on Dec 5, 2011 12:40:24 GMT -5
Good questions. Design criteria is being able to run everything as reliably and quietly as possible, with all types of ammo, in auto. Working on some stainless parts to handle the surplus stuff.
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Post by HMC710 on Dec 10, 2011 9:48:15 GMT -5
Trying to get some subsonic testing in this weekend.
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Post by HMC710 on Oct 27, 2012 16:13:30 GMT -5
So Tim, what did you do this weekend? Why should the 358 ARem have all the fun..... ; 250gr of pure lead joy. QL says it will work....... but, I think I'll try with the 9x23 brass and give some more case length. Then I won't feel bad about throating a std 9mm brl. Maybe them 158gr wadcutters will work too. Yes, they do fit in a 30 Carbine Mag
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Post by 22boomer on Oct 28, 2012 11:30:30 GMT -5
I love my Tok uppers but I really don't like shooting the milsurp stuff so I either reload or buy commercial made ammo. The good point about 9mm is I can even buy the stuff at Walmart so 9mm is easy to find like everyplace. I've also noticed that the big jump on the Tok band wagon has really died down and things seemed to have moved back to the 9mm round. There are a lot of different 9mm rounds available (power wise) and if your piston upper works with most of them it just might be the time to get your piston upper in production. I sure hope you can find a nice handguard that will go over your setup. When I had one of my Tok uppers set up as a piston upper I really liked how nice and clean the upper and lower stayed. I think one of the problems with the DI operated 9mm uppers is the crud that blows back into the receiver -- your piston operated upper should take care of that problem.
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Post by HMC710 on Oct 28, 2012 13:30:11 GMT -5
Yea, just ran a bunch of reloads through it this morning. Loading those 32 round Uzi mags are a pain..... definately need to get one of those Lula Loaders or something. Yes, definately cleaner than the DI gas or blow backs. Working on the new design today. Have an alt design that fits stock hg but that takes all new parts. Still getting some orders for Tok stuff but yes, since the $80/case went to $160+ people are going with the 9's.
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Post by HMC710 on Oct 31, 2012 20:35:26 GMT -5
testing.......
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Post by HMC710 on Nov 10, 2012 15:30:05 GMT -5
Made a couple new set ups and orders some HG parts. We'll see what happens...
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