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Catalyst Arms - Hammerhead Bolt Knob

(62 reviews) Write a Review

$39.99

SKU:: HH-BK
Brand: Catalyst Arms
Product ID:: 43623

Current Stock:

Quantity:

Description

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

Bolt knob
5
Posted by Keith on May 16th 2026

I love the design of this knob. I usually push the bolt back with my thumb and then catch my brass. This works perfect for that.
Hammer head bolt knob
5
Posted by Chris B on Mar 11th 2026

No thread issues screws right up
Looks great!!!
Excellent quality it's like a glove
5
Posted by Stephan on Feb 2nd 2026

Excellent product it's exactly as it should on my new rifle great craftsmanship
Bolt knob
5
Posted by Mike Fehervari on Oct 6th 2025

Knob worked out perfectly.
Painted is the same red as the rifle.