Thinking about a dissy > Build It Yourself

Posted: 8/30/2005 6:05:55 PM EDT

I have a 20" flat top upper. Can I simply have the front section cut off? Or do I have to move the gas block closer toward the receiver?

Sorry in advance if this is a FAQ, but I couldnt find any info with the search.

Posted: 8/30/2005 6:11:43 PM EDT

[#1]

You need a lathe to cut the barrel down.

You will also need to open up the gas port, depending on how much you chop off.

Posted: 8/30/2005 7:32:17 PM EDT

[#2]

And I've seen good results from a member on these boards that did it for another member.

I'm really warming up to the idea of a cut-down 20" because of that. Makes quite a bit of sense and I bet it'd be pretty light.

WIZZO

Posted: 8/30/2005 8:49:56 PM EDT

[#3]

Whats the advantage to a cut down 20 as opposed to a regular 16in. barrel?

Posted: 8/31/2005 2:54:13 AM EDT

[#4]

Quoted:
Whats the advantage to a cut down 20 as opposed to a regular 16in. barrel?

You get the smoother ops of the rifle length gas system along with the rifle length sight radius, all in a carbine length, mobile package. If you do it with a gov't profile barrel, you get a very light package, also.

Posted: 8/31/2005 4:08:26 AM EDT

[#5]

Thanks for the replies so far. It is an HBAR, so I don't think I will see any weight savings. What member did it for what member? Are there pictures available?

Posted: 8/31/2005 4:52:22 AM EDT

[#6]

Quoted:
Thanks for the replies so far. It is an HBAR, so I don't think I will see any weight savings. What member did it for what member? Are there pictures available?

I did one for BadSVT. I've also done two for myself.

Link to BadSVT's Dissy

Link to my Dissergy project

Posted: 8/31/2005 7:56:22 AM EDT

[#7]

Thanks.

So basically It can be done, but the gas port on the barrel has to be drilled out to .100

Sweet.

Posted: 8/31/2005 9:08:59 AM EDT

[#8]

Quoted:
Thanks.

So basically It can be done, but the gas port on the barrel has to be drilled out to .100

Sweet.

0.100" works for me and the barrels I used. Some say 0.110" is needed, but I came up on my gas port size in increments and it ran fine at 0.100", so if you started at 0.100", it should work, but a tweak or two may be needed.

Posted: 9/1/2005 6:54:16 PM EDT

[#9]

Where do you get your 20" barrels to cut down?

Posted: 9/1/2005 7:47:52 PM EDT

[#10]

Quoted:
Where do you get your 20" barrels to cut down?

I do them myself.

Posted: 9/2/2005 10:24:17 AM EDT

[#11]

Quoted:
Quoted:
Where do you get your 20" barrels to cut down?

I do them myself.

I'm sorry what supplier do you use for the barrels to cut down

Posted: 9/2/2005 12:11:02 PM EDT

[#12]

Quoted:
Quoted:
Quoted:
Where do you get your 20" barrels to cut down?

I do them myself.

I'm sorry what supplier do you use for the barrels to cut down

The EE mostly. I look for new or low round count gov't profile barrels. IMHO, if you want a Dissy, it's the only way to go.

Posted: 9/2/2005 3:45:54 PM EDT

[#13]

+1

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