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Catalyst Arms - Hammerhead Bolt Knob

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The Catalyst Arms Hammerhead Bolt Knob

Upgrade your rifle with the Catalyst Arms Hammerhead Bolt Knob. This oversized aluminum bolt knob allows for better control on each shot. 

Its shape allows easy access and prevents the shooter’s hand from slipping onto the bolt handle. This bolt knob will fit all 5/16-24 bolt handles, allowing it to work for most rifles, including RPR and Christensen Arms. 

This bolt knob comes in black, red and sniper grey. If the Hammerhead isn’t the right fit for you, check out Anarchy Outdoors’ bolt knob collection. We have something for everyone. 

Features & Benefits

  • Fits bolt handles with 5/16-24 TPI 
  • Easy installation
  • Made in the USA
  • Weight: 1.5 oz
  • Dimensions: 1"x1"x2"

Customer Reviews

  • Hammerhead Bolt Knob

    Posted by Dave F on Oct 27th 2022

    Beautifully machined and finished. Easy threaded install. Agree with other comment about being bit over sized-particularly for the rimfire, but it's a keeper

  • Hammerhead knob

    Posted by Michael on May 2nd 2022

    Much better feel than the factory standard.
    The milled groove helps guide my meathook to the right spot every time, the textured knurling gives positive engagement on the return throw, and the size is just right for me.

  • Knob

    Posted by Jon on Apr 29th 2022

    Love it. The size is perfect. Nothing worse than having a small bolt knob while shooting in a match

  • Big Knob

    Posted by Ben on Apr 27th 2022

    This knob is pretty big. Works great but is a little bigger than necessary.

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