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Posted: 10/2/2014 5:51:49 PM EDT
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Here's the punchline: I have a complete Bushmaster lower that I bought in 2002 or so, and it's been sitting in the safe ever since. I thought I would change out the buttstock from the collapsible "looking" stock...it's a non-collapsible from the dark days.
I have a lower receiver block, and a spanner wrench...and that castle nut is not effing moving. WTF??? It's as if they used nuclear strength Loctite. I actually broke the tooth on my first spanner wrench. Is there anything special that I might be overlooking? Yes, I'm trying to loosen counter clockwise. I cannot see that it's staked. Hell, I'm wondering if I need to heat the nut up a bit with a Bernz-O-Matic. No way should it be this hard. |
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HammerHead Rifle Tool with a breaker bar removes all castle nuts with ease.
http://hammerheadrifletool.com/HammerHead_Rifle_Tool/HammerHead_Rifle_Tool_Home.html |
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Make sure you have a good wrench. There are some cheap ones out there that only engage one notch on the nut. Get one that engages at least 3 of the notches. I use a RRA wrench, see link below. If the nut is on there tight I hold the wrench firmly onto the nut then whack the end with a small hammer. Haven't had a nut yet that didn't come loose using this method, including staked nuts. I use a receiver block in a vise to hold the lower while removing / installing the nut.
http://www.brownells.com/gunsmith-tools-supplies/rifle-tools/wrenches/ar-15-m4-stock-wrench-prod16882.aspx |
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