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WTT. I have a Colt brand AR-15 16" heavy barrel for sale. It was taken from a Colt AR6721 AR15-A3 Tactical Carbine. F marked front sight, and flash hider installed with 1/9 twist. Barrel markings read " C MP 5.56 NATO 1/9 HBAR " Great condition very very little use. Does not come with gas tube or delta ring.
**Withdrawn**
**Withdrawn**
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