Local dealer has some AR-15 lowers which are extra heavy duty. Milled from block of aluminum. Are those legal for CMP competition? I looked in the CMP manual and wasn't sure if "service rifle or commercial equivalent" means the lower must have all the same external dimensions and radii as an M16 variant.
Which lowers are CMP legal?
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It doesn't matter unless you win.
Phillip McGregor (OFC)
"I am neither a fire arms nor a ballistics expert, but I was a combat infantry officer in the Great War, and I absolutely know that the bullet from an infantry rifle has to be able to shoot through things." General Douglas MacArthurComment
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