Here are a couple of SBR's that I recently put together for a friend here locally. Both lowers are from Bravo Company. One has a BCM upper and the other has a Vltor MUR. The MUR is a stronger design and the purpose behind it (based on some testing) was to prevent or minimize upper receiver flex.
One is an 11.5" and the other is 12.5". Both are set up to use an AAC M4-2000 MOD 8 suppressor. Everything else is a personal preference deal.
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