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Ahah, I have experience modifying and repairing Echo1 m28 rifles :D

It's a very solid rifle once you get the right sears :shot:.

Oh btw, if any of your cylinder internals break on the M28, the Echo1 company sells cylinder sets (i.e. spring, cylinder, pistol, spring guide) for I believe... $20 or $40. Unfortunately I know the price is one or the other, but I totally forget which one! :doh:.
 

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The bolt handle on my old Well mb10 is crimped and it has lasted me for the past 2 years now. Guess I justgot lucky. Anyway, I just realized I have never put barrel spacers in my Well mb10 because With it's 200ft range and the th I only use it to play around shooting with iron sights in my backyard, I never felt the need to. (Pretend this is a new paragraph. Having problems with the enter key again.) So I recently discovered oogoo, a cheap alternative to sugru. I wonder how well it would be at quieting my ba10. Right now I have everything clayed but I am constantly getting clay flaking off when I take off the assembly from the stock. Silent do you know how well silicone rubber stops echos compared to clay?
 

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Yeah them M28's are sweet! I blew out my piston. I wont buy a replacement one from Echo1 cause its going to be the same cheap plastic one I already blew out. I have all my old m28 parts still. the cylinder,head,hopup and reciever and I cut the barrel shorter and now I can see how crappy they made the barrel. one side is way thicker than the other side. "cut and looking at the thickness of the barrel that is" its amazing my rifle wasnt shooting sideways from the looks of this thin,lol.. barrel spacers would only keep the inner barrl cockeyed to the left unless I custom made something. Foam could maybe but I think it would still bee crooked.

And I didnt even think about the hopup making the sound differ being set differently:tup:
 

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The bolt handle on my old Well mb10 is crimped and it has lasted me for the past 2 years now. Guess I justgot lucky. Anyway, I just realized I have never put barrel spacers in my Well mb10 because With it's 200ft range and the th I only use it to play around shooting with iron sights in my backyard, I never felt the need to. (Pretend this is a new paragraph. Having problems with the enter key again.) So I recently discovered oogoo, a cheap alternative to sugru. I wonder how well it would be at quieting my ba10. Right now I have everything clayed but I am constantly getting clay flaking off when I take off the assembly from the stock. Silent do you know how well silicone rubber stops echos compared to clay?
Go steal an old couch cushion from the side of the road for the foam. that basically what I did.
 

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I have everything clayed and have enough foam stuffed into the smaller places. I am wondering if this silicone rubber "oogoo" (look it up on instructables) is any good for this.
 

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I've never tested silicone rubber goo in my stock so unfortunately I have no clue :shrug:.

I used modeling clay for my rifle and it doesn't chip. Perhaps you're using a different kind of clay?
 

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My clay I'm pretty sure is modeling. It is one of those "never dries" clays. It doesn't really ship but whenever I pull out the assembly from the stock it pulls along a little bit of the clay with it and when I fully take it out, the little tab behind the trigger guard that holds the receiver in place scrapes some clay out with it too.

I'm going to try out some of that silicone rubber stuff, "oogoo", and see how well it works for stopping echoes and vibrations. Might even use that as a barrel spacer if I can get the mixture to produce a dense enough rubber.
 

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Is there a guide anywhere for the wax spacer? Tried researching it but just came up with results of how much better it is than other spacers. I would like a guide for the wax spacer because I can add some paint thinner to the oogoo mixture to give it any consistency I want before it cures. If I can get it to act like melted wax then I can use the same process. Otherwise I have to plan out the whole thing from scratch.

I just got the materials to make oogoo so I am about to experiment with it to see if it has the right density for a barrel spacer (as in if it is too soft it wouldn't be too good).
 

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So I just tested the density of oogoo with a 1:1 cornstarch to caulk ratio. Seems a little bit denser than those small rubber bouncy balls with a color on each side. Seems like it would work as an effective spacer but I'll wait for Silent's input on if this is dense enough before I make spacers out of it.
 

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Hmm, paraffin wax is 0.97 g/ml in density; generally waxes are 0.93-1.00g/ml. If you can get close to that value then you're golden :tup:. Hopefully you can find a way to calculate the density of that goo without wasting too much >:D.
 

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Silent, this stuff is dirt cheap. In fact if I were to buy dirt from homedepot I would probably be paying more. A 10oz tube of the silicone caulk costs 4$ and the cornstartch is like 3ish. I just made a scrap piece to test out how it feels that I can also test the density of probably. But it is rubber so I don't know if that will pose a problem. I just have to find out how to measure the density because I don't have a scale that accurate, or know of anything that weighs less than .05g to test with a balance. I could use bbs but it would be roughly within .2g. I could up the volume of the rubber to get a more accurate reading though.
 

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So I did some testing with the density of the rubber. Keep in mind this is only rough but I did try my best to be as precise as possible. So I first measured out exactly 1ml of the rubber with the water displacement using a graduated cylinder method. I had previously made a balance scale with a two foot long steel rod with a medicine cup at either end for the pans. I also set up a leveled protractor so when I put stuff in it I could see exactly which is heavier for when I make things out of various powders (not going into that now).

I made sure the balance was exactly 0 degrees, meaning level with the ground or gravity. I put the 1ml of water in the left cup and the right rose to 20 degrees. When I put the 1ml of rubber into the right cup it sunk below the 0 degree mark and the cup with the water in it rose to 5 degrees.

I can't make out too much from this info because I don't have much experience with this, but from what I can tell the rubber's density is slightly over that of water, maybe 1.05g/ml or 1.1g/ml. Does that result sound right?
 

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if it sank slowly in the water i would say that sounds about right,
Well it sinks about three times slower than a piece of pink eraser so I would call that sinking slowly.
 
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