CSMR™ Button

(3 reviews) Write a Review
$19.00

Product Overview

CSMR Button™ - Concentric Spring Magazine Release button for M4 style rifles. The CSMR™ features two bosses on the backside to help keep the spring concentric during compression, and a raked 8 degree face for a more natural finger placement. Keeping the spring concentric during compression helps eliminate the crunchy feel when depressing. Offered in two styles, "MilSpec" (visually looks like the MilSpec fingerprint with all the updated features of the CSMR™) or "Apex" (a mild yet grippy texture) to accomodate both the agressive or more conservative style of AR's. Also included is one of our 302 Stainless Mag Catch Springs (also available separately for purchase here) for even smoother compression, Patent Pending. Only includes the Button and Spring.

Ships Free and Made in USA 

  • CNC Machined 
  • 6061-T6 Aluminum
  • Type 03 Hardcoat Anodizing
  • 8 Degree raked face
  • Two button Styles to choose from
  • 302 Stainless spring included
  • Less than 0.01oz (including spring)

Reviews

(3 reviews) Write a Review

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  • 4
    CSMR

    Posted by JP on Jan 28th 2020

    Nicely constructed and finished. Lets you screw down the release a little deeper than stock, the angle is also a nice touch. The spring does not make much of a difference though. Good product overall.

  • 5
    Simple but perfect!

    Posted by Seth on Jan 26th 2020

    you wouldn’t think this would make such a big difference but it actually does. I picked up the Apex design and love it. Very grippy and smooth at the same time! Not to mention it looks awesome and adds a little bit of detail to an otherwise boring part. Great job!

  • 5
    Like a Glove!

    Posted by Gary M. on Jan 21st 2020

    I never thought that a mag button would make a difference, but this one really does. It is so smooth and consistent every time. Great job designing this thing Railscales.