Yeap I'd also say its a LMT bolt.I have a AJ lot code marked bolt I got direct from LMT last summer,so its a recent lot#.Another indicator to help I.D. a LMT bolt is that they have the releived lug roots at the rear base of the lugs which resembles a recessed ring around the bolt in that area.That is a LMT patented design and I have not seen any other bolts with it..
Like IG said,the carriers are hard to eye ball but LMT's gas key screws are a bit different than what is used by the other manufacturers.Pictures of both examples can be found on this site.
To further add,the carrier that came with your AJ bolt will more than likely have a MIM gas key as mine did,which can be identified by a small ring on the top of the gas key between the screws and the gas key bore will not be chrome lined.
Otherwise I would not have any doubts and run it with confidence.
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Originally Posted by Todd.K
Because AR type 308/7.62 rifles are not all the same like 223/5.56 rifles, you should not call it an AR-10 unless it is Armalite pattern.
Last edited by Blankwaffe; 01-30-10 at 20:55