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Posted: 10/7/2010 4:52:20 PM EDT
The mount doesn't seem to want to sit flush up against the shoulder of the barrel, is this normal? Also, the mount came with the wrong shims (.223) do I need to get the correct .308 ones?
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Sometimes on factory threaded barrels, the threaded part is too long and makes contact with the front of the mount before it butts up against the shoulder.
You need to get the proper shims and make it contact the shoulder or get the threaded part slightly cut and recrowned. |
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Quoted:
Sometimes on factory threaded barrels, the threaded part is too long and makes contact with the front of the mount before it butts up against the shoulder. You need to get the proper shims and make it contact the shoulder or get the threaded part slightly cut and recrowned. That's what I was thinking was happening. I was going call the company tomorrow and see if they will ship me the correct shims but I was afraid the gap may be to big. Do you think one of the larger shims will work ok? Thanks for your input. |
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Quoted:
Quoted:
Sometimes on factory threaded barrels, the threaded part is too long and makes contact with the front of the mount before it butts up against the shoulder. You need to get the proper shims and make it contact the shoulder or get the threaded part slightly cut and recrowned. That's what I was thinking was happening. I was going call the company tomorrow and see if they will ship me the correct shims but I was afraid the gap may be to big. Do you think one of the larger shims will work ok? Thanks for your input. I would ask for 2 kits as that's a decent gap. My factory AR10 barrel did the same thing but one kit was enough to shim it. Make sure you get all of the carbon build up off the muzzle as that adds to the gap. |
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Quoted:
Quoted:
Quoted:
Sometimes on factory threaded barrels, the threaded part is too long and makes contact with the front of the mount before it butts up against the shoulder. You need to get the proper shims and make it contact the shoulder or get the threaded part slightly cut and recrowned. That's what I was thinking was happening. I was going call the company tomorrow and see if they will ship me the correct shims but I was afraid the gap may be to big. Do you think one of the larger shims will work ok? Thanks for your input. I would ask for 2 kits as that's a decent gap. My factory AR10 barrel did the same thing but one kit was enough to shim it. Make sure you get all of the carbon build up off the muzzle as that adds to the gap. Yup, I'm trying to get all that goop stuff off. I think it is dried rocksett or something from the Surefire brake that was on it before. Thanks again I will call AAC tomorrow to see about some shims. |
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