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6/4/2011 10:14:13 AM EDT
I used search to find any topics or FAQ about AR bolts, but didn`t found any. Anyway....when should i have to change the bolt to new one ?  Any deadline with rounds ?


JN
6/4/2011 10:44:10 AM EDT
[#1]
When clean check for cracking of the lugs and any other issues.
Check the gas rings and replace as needed (i.e will not hold up your bolt carrier's weight).
Check the extractor, clean and replace if damaged
On the full auto guns have had the gas key come loose on the bolt carrier.
I would think a close look after a dozen cases of ammo would be called for (yearly or each cleaning is even better ;-)
A spring rebuild for a critical use rifle every half dozen to dozen cases of ammo is not uncalled for IMO and low cost.
For a duty rifle or any that you rely on, why not retire it to the "shooter" rack after one to three dozen cases of ammo and get another (always need to uppers ;-).

Good luck and sure someone will come up with tech specs for you.

6/4/2011 11:20:33 AM EDT
[#2]
Short of a defect in the bolt itself that warrants a replacement (lug shearing off, or the sides of the cam channel cracking), you will wear out many barrels before the bolt needs to be changed.
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