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Posted: 1/18/2011 9:56:09 PM EDT
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Hey guys,
So I recently put my standard receiver extension on after selling my UBR, but even with a vice and proper wrench, I can't seem to get this darn buffer tube perfectly straight. It always ends up just slightly crooked to the right or left. It doesn't look like much, but I can feel it when doing shoulder switch drills. Is there some tool I need or something? Thanks, Mike |
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Short of some kind of jig you could build - no not really, just a good sharp eye is all that is needed. I guess you could use one of those laser levels and "scribe" a line down the center of the rifle to check it. Maybe I'm the minority here, but I just get it Good-n-straight and leave it. You can adjust it if it pisses you off enough. |
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Do you mean a carbine buffer tube? If so, the end plate should have a nipple inside the circular opening at the bottom that lines up with a cut out of the bottom of the threads of the buffer tube. The nipple will keep the tube straight once you torque down the end plate to the receiver.
You can clearly see the nipple here |
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There is a tool that can hold the buffer tube in place while the castle nut is tightened...again, I'm a little biased, but the HammerHead Rifle Tool works great at this. After placing a couple of wraps of masking tape on the buffer tube, slide the HammerHead Tool down over the RE tube and use it to "lock" the tube in place while the castle nut is locked down. Now, locking the castle nut properly does require the right tool...the HammerHead Rifle Tool of course (I said I was biased). This technique which, works perfectly with tubes that seem to want to turn a little past center, is accomplished via the use of two HammerHead Rifle Tools...one to hold the tube and one to tighten the castle nut. The issue of course is having to buy two tools...with any luck, you have a good friend that has one as well.
I must say though, most tubes seem to lock down and not turn past center after the castle nut grabs and secures the base plate and RE tube via the shared "groove". Looking at the tool itself may help to explain this. Email me if further explanation is needed: [email protected] Bob- |
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