COLT 6945 UPPER FOR SALE NO FURTHER A MYSTERY

I decide to do a adjustable block on mine someday but even currently being a little overgassed suppressed its not likely tearing my brass or shifting parts up all of that over unsuppressed.If any FFL inside the chain has transferred a decreased as a rifle at any position, it is a rifle. Having an FFL isn't going to make them geniuses or mean which