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Hello to all. I just wanted to inroduce myself. My name is John. I have been an AR owner for years, but I have finally moved up to the 6.8! I just purchased a new Bushmaster M4A3 in 6.8 spc. I have been reading as much on this site as I can and have learned alot already!! Thanks everyone! I did see in some posts some uncertainty in the chamber on the Bushmaster barrels. Mine has a 1/10 twist but I was not sure if SAAMI or Spec II was used. I emailed Bushmaster and received a response from Jim in their tech dept. He verified that the chambers used are the SAAMI and not to use the hotter combat loads. Without the info on this site I would not have known the difference in newer chamber specs and may have caused myself weapon damage, or injury! Thanks again for a great site and happy holidays to all members and their familys!!

John S.
 

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Welcome aboard John. I have the SPCII Reamer if you want to convert yours to the SPCII Chamber.
 

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Welcome, give us a range report when you get to shoot her.
 
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