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Posted: 12/2/2015 4:45:02 AM EDT
So I was looking at my new Colt vinyl acetate stock admiring it when I noticed that two threads on the underside of the tube along the alignment channel were sheered off. I took some measurements and sure as shit it's right where the retaining plate goes. I slid a retaining plate on to see if it effects anything and lo and behold its fucked up, so does anyone on here have a fix for this. I can't use it as is as it could allow the stock to rotate quite a bit. Now it seems my options are find another or fix this one.
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That is caused by a bad job of installing the extension. If it came that way when you bought it then you need to return it. home_alone1, no offense, but I will have to agree that something was not done correctly. Properly installed, that should never happen. Like he said, if it came that way, send it back, otherwise, I would just replace the buffer tube. They are not that expensive. |
| I agree, contact seller and return extension tube if possible for a refund. I'm sure you spent a pretty dime on this set up. Of course you could attempt to have it welded, re threaded then parkerized. But in the long run it probably cost more than a NDS 2 position replacement extension. I'd be pissed also...... |
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I would be more inclined to attempt a "fix" by modifying the retainer plate. I'll take a look at one of my setups (tube/plate/nut) and see what might could be done. I'm thinking along the lines of extending the "tang" on the retainer plate, either fore or aft a small amount from how the tang is now. Just depends on the depth of the slot that the tang engages, and what the minor diameter of the tube threads are, compared to the major diameter of the jam nut threads.
Give me a day or so. I'm about to head out the door for work and won't get home till after midnight tonight. Edit: this assumes seller won't make it "right" 2nd edit. If you and seller can't/don't come to an agreement this could be done also......small amount of weld Tig'd on. Chuck in lathe and pick up the threads. Carefully, and slowly, chase existing threads until nut will thread on. I'd be afraid to use a die, as it would almost certainly damage the anodizing on the rest of the threading, as the teeth of the die are going to make contact for the full diameter of the tube threads. Single point on a lathe can be feed in a couple thousandths at a time, stopping before doing any damage to the rest of the threads. If it comes to this, I'll do it for you as a PIF. Stoner |
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I'm a simple guy and that being said and I had to use that tube I would cut off a little bit off the end that threads into the receiver so it sits a bit deeper before it catches the buffer retainer pin.
That would change where your end plate sits and once done wouldn't really be noticeable. |
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New tubes are only $25 or so. Less if you can catch a sale.
At that price I don't know if this would be worth messing around with trying to rework the threads. Maybe the seller will work with you to replace or refund some $$'s If you are really trying to get by with a cheap fix I would just use some BLUE Loctite. A little bit of heat can be used to release it if you ever need to take it apart. I know I'll get flak for that but as long as you use blue and not red Loctite you should be able to get away with this. |
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Would it not still work once the castle nut was tightened down properly? Yep, I've seen this type of damage before - it's pretty common, folks turning the tube with the end plate still in place on the receiver. Once it's tightened up properly, you'll never notice it and it won't affect a thing. |
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