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Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob

Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Black, 0004BK
Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Red, 0004RD
Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Grey, 0004GR
Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Black, 0004BK
Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Red, 0004RD
Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Black, 0004BK
1 of 5 images
Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Black, 0004BK
Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Red, 0004RD
2 of 5 images
Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Red, 0004RD
Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Grey, 0004GR
3 of 5 images
Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Grey, 0004GR
Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Black, 0004BK
4 of 5 images
Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Black, 0004BK
Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Red, 0004RD
5 of 5 images
Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Red, 0004RD

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Questions & Answers
Does this fit the Ruger Precision Rimfire? Expert Answer

Yes. The Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob is threaded 5/16x24 and will fit the standard Ruger Precision Rimfire bolt handle threads.

by Ethan, Gear Expert, June 8, 2022
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Customer Reviews
Most Recent Reviews
Better than OEM by Scott H 2, Verified Owner, November 7, 2024
Much better than original bold knob that came with the RPR. Took a little muscle and the right tools to remove the original knob but that’s to be expected.
Most Recent Reviews
Great knob by RPR 6.5cr, Verified Owner, September 18, 2024
Love it hour glass shape is great best I’ve had great texture and coating is good so far
Most Recent Reviews
Another great addition! by Orlando Lujan, Verified Owner, July 7, 2022
This is a great upgrade that you can install in minutes. Although the video mentioned I could unscrew the old and screw in the new I ended up replacing the bolt handle and knob at the same time. It does stick out a bit more but I like that about this...
Read More...
Most Recent Reviews
Catalyst Arms RPR bolt knob by BT, Verified Owner, May 26, 2021
Well made. Larger than the OEM bolt knob but not too big. Finger grove is awesome for closing the bolt with your trigger finger. Easy to install. Used a little bit of blue Loctite to ensure it doesn’t not work loose during shooting. I would also reco...
Read More...
Most Recent Reviews
Knob is perfect by Joel Swenson, July 9, 2020
Excellent,,just what I wanted perfect red color..... works as intended....customizes for decent price .... easy to install ....I would definitely buy from optic planet again have bought several items with easy shipping and. Good prices
Read All 5 Reviews
Condition:
New
Gun Make:
Ruger
Fabric/Material:
6061-T6 Aluminum
Color:
Red
Weight:
1.5 oz

Code: 3ST-HOA-RGBKN-0004RD

MPN: 0004RD

UPC: 850009431059

Product No Longer Available

Product Info for Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob

Developed for the way precision rifle shooters actually work the action, the Hammerhead is ergonomic and provides secure control for all methods and grips used to cycle the bolt. Made from aluminum and anodized black or red, the Hammerhead prevents the shooters hand from inadvertently slipping onto the bolt handle itself, even if the shooters hands are wet, slippery or while wearing gloves. The Hammerhead fits any bolt handle with 5/16"-24TPI threads which is quite common for bolt handles.image

Features of Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob

  • No gunsmithing required, easy installation, machined from 6061-T6 aluminum

Package Contents:

  • Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob

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Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob Unavailable & Discontinued Models

List of Unorderable Models

  • Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Red, 0004RD , MPN: 0004RD , UPC: 850009431059 , Code: 3ST-HOA-RGBKN-0004RD
  • Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Grey, 0004GR , MPN: 0004GR , UPC: 850009431066 , Code: 3ST-HOA-RGBKN-0004GR
  • Catalyst Arms Ruger Precision Rifle Hammerhead Bolt Knob, Black, 0004BK , MPN: 0004BK , UPC: 850009431042 , Code: 3ST-HOA-RGBKN-0004BK
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Last updated 2026-09-11 UTC.