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Catalyst Arms RPR (Magnum) Mag Release Extension
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Catalyst Arms RPR (Magnum) Mag Release Extension

(4 reviews) Write a Review
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Magnum RPR (.338 Lapua & .300 WSM) owners can now upgrade with our new RPR Mag release extension that is based on Americas best selling short action RPR Mag release extension.


Magnum Ruger Precision Rifle shooters can easily make rapid and efficient magazine changes while maintaining their strong-hand grip. Machined from 6061-T6 aluminum, the new Catalyst Arms Magnum MRE is lightweight and installs with a single screw without any modification or disassembly of the rifle. Designed to be easily accessible yet snag resistant, the Magazine Release Extension’s sits forward of the trigger guard with a profile that matches the sides of the magazine well. The Magnum Magazine Release Extension has rounded edges to prevent inadvertent activation from contact with gear or the use of gloves.


Does not fit Ruger Precision Rimfire Rifles




4 Reviews

  • Nice upgrade

    Posted by Jack Nix on Nov 1st 2019

    Allows a mag change without removing my hand from the grip. Not that I’m planning on doing a lot of speed reloads with my 338 Lapua, but it makes the gun a bit faster to use.

  • Great item

    Posted by David Turpin on Sep 30th 2019

    Purchased for a RPR in 300 win mag. Fit perfectly, looks like it belongs there from the factory.

  • Magazine release extension

    Posted by Anthony G on Sep 5th 2019

    This little gem is an absolute must have on the Ruger Precision Rifle. With this installed there is no more fumbling and feeling around for the magazine release. I believe you could use it in the dark. Purchase one you will not regret it. Another awesome product from Anarchy!!

  • Adds utility

    Posted by Unknown on Aug 5th 2019

    Works as advertised to aid in magazine change for ,338 RPR. Got mine in black because I favored functionality over bling.

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