Home AR-15 Bushmaster AR-15. A new upper.

Bushmaster AR-15. A new upper.

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I’m finally getting around to making my Bushmaster MINE. Not a lot of changes, but ones that will make this particular carbine fit me and my needs better.
This video is installing a Spike’s Tactical flat top upper.
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23 COMMENTS

  1. Sounds like they may not have put any grease on the threads for the barrel nut. If you don't see any on it you should probably put some on yourself. It keeps the barrel nut from seizing up after getting heated up during firing. I am not sure what kind to use, mine has some kind of semi-clear (white-ish)

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