AR15 6.5 Grendel need a adjustable gas block?

Discussion in 'Silencers' started by asahi1234, Apr 4, 2017.

  1. asahi1234 New Member

    I have a Lesson Baer 6.5 Grendel 20inch barrel. I ordered your ultra 9. Will I need to install an adjustable gas block or will it function fine without a adjustable block? Can't wait to get my Ultra 9. It's been 4 months already. Thanks for your response
  2. Zak Smith Operations

    • Instructor
    Zak Smith

    It's hard to say, every upper is a little different. Try it without, and then only add one if you get problems

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