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PostPosted: Mon May 19, 2014 6:52 am 
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Here are some pics of the Gmac disco tube. The marks on the outside of the tube were still visible after an hour of sanding with grits from 250 to 1000. since I intended to powder coat the tube anyway, I thought the remaining fine marks might be covered by the powder coat, but I was wrong.
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PostPosted: Mon May 19, 2014 7:00 am 
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Yes, the marks on the outside of the tube seem to be standard quality control from Crosman today.... I can't comment on the size the tube was bored to before threading, I can't say I've ever really checked.... When I thread in the fill fitting it never seemed to wobble around....

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PostPosted: Mon May 19, 2014 9:28 am 
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I was under tha impression that Gmac made the tubes. If it, s a crosman made tube then no point complaining to Gmac.

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PostPosted: Mon May 19, 2014 9:33 am 
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If it's a standard length Disco tube, then why would it be made by GMAC unless it is from a stronger material and rated for a higher pressure?....

Bob

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PostPosted: Mon May 19, 2014 10:49 am 
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Those marks on the side of the tube are somewhat common. However, the 'dent' on the threaded end is not typical on a factory tube and would likely be from dropping or the like- possibly in shipping (?).

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PostPosted: Mon May 19, 2014 2:30 pm 
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joe hickey wrote:
I was under tha impression that Gmac made the tubes. If it, s a crosman made tube then no point complaining to Gmac.

I don't know enough about the process of custom building from parts. I assumed all Gmac parts were custom parts. And crosman parts were factory made.

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PostPosted: Mon May 19, 2014 2:35 pm 
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AirGunEric wrote:
Those marks on the side of the tube are somewhat common. However, the 'dent' on the threaded end is not typical on a factory tube and would likely be from dropping or the like- possibly in shipping (?).

theres no dent. Just a reflection. However if you are refering to the rough edge, it,s likely just uneven powder coat from where the teflon plug was pushed in to protect the threads from getting coated. The tube was packaged quite securely in a cardboard tube wrapped in heavy paper.

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PostPosted: Tue May 20, 2014 12:09 am 
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Does the tube have "Discovery" silkscreened on it? If so, it is a factory tube.

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PostPosted: Tue May 20, 2014 4:54 am 
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AirGunEric wrote:
Does the tube have "Discovery" silkscreened on it? If so, it is a factory tube.

Yes it did have. And the marks in the pic above are AFTER I refinished it. Before, it looked like the lines inside the tube, just below the threads.

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