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Posted: 6/3/2014 5:22:52 AM EDT
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I'm trying to do my first upper build and am curious about torquing down the barrel nut. I know the value should be between 30-80 ft/lbs.
I am installing a Centurion CMR, so I have to use the side of the armorers wrench that is basically a spanner wrench with a tooth at the end. Considering that the hole for my torque wrench is almost on the complete opposite side of the armorers wrench, how do I compensate for that extra length when setting my torque wrench? |
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Quoted:
Wrench should have 3 pins for the barrel nut. The square hole for torque wrench is close to that end. The end with single pin is for old style carbine buffer tube nut. The CMR does not use a standard barrel nut. That is why I have to use the spanner-style end of the wrench which is much further away from the square hole for the torque wrench. Here is a picture of the CMR barrel nut that Stickman took 
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| Here is what I have ---> http://www.aimsurplus.com/product.aspx?item=XGTTOOL |
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