The Colt 6920 is an excellent choice for the carbine-length M4. Then there are the mid-length gas system M4s. The BCM, LMT, DD is my order of preference.
Great deal, jump on it now. The Colt LE6920 are the best you can get of their class. Plus you will get a full auto BCG which is what you want. The carbine length gas system (because some have said that it is overgassed) should have the next heavier buffer. It also comes with the 1/7 twist...
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