How to Make a C8 SFW Clone

Rebel Rouser

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I used a 16" Colt 6721 barrel off a Colt AR-15A3 Tactical Carbine.The barrel is actually the correct dimension right behind the FSB you just have to machine it a little bit.
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Here is my sleeve that has already been machined and parkerized.
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On the Colt 6721 you have three steps in the barrel. You have to machine back from the first one.
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You have to machine some material off the front on the barrel to make room for the sleeve.
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Here's the barrel after it has been re-parkerized by Armacoat.
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The cool thing is when it was machine the C MP still remains on the barrel.
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Here it is again with the sleeve installed.
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The finished upper.
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