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300 Blackout build

AJB

Sergeant
Full Member
Minuteman
May 30, 2007
343
7
South Florida
I am trying to plan a 300 blackout build. I have a Surefire FA762SS soon to be approved and want to use it on this upper. I wanted to use a 14.5 Noveske barrel and perm attach a MB762SSAL/RE on it.

Does anyone know what is the maximum length of a rail system/ hand guard I could use on this in this configuration?

I would like to keep this rifle as short as possible, but a 16" barrel is not out of the question. I like the AAC 16" upper but don't know if I can mount the surefire brake on it.