CSRG 1911 Double Stack Competition Follower & Spring Kit (Atlas, Checkmate, Staccato, SVI Tubes)

CSRG 1911 Double Stack Competition Follower & Spring Kit (Atlas, Checkmate, Staccato, SVI Tubes)

CSRG, LLC
SKU:
CSRG-2011FSK
$20.00 - $56.00
(12 reviews)
Current Stock:
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Description

Maximize the capacity on your 2011-style magazines with the CSRG Competition Follower & Spring Kit!

Our kit includes the following: 

  • CSRG 2011/1911DS Competition Follower, made from durable nylon
  • CSRG 11-coil or 13-coil Competition Spring (made by ISMI)
    • We recommend using 11-coil springs for 141.25mm magazines
    • We recommend using 13-coil springs for 171.25mm magazines
  • Competition follower does NOT lock the slide open after firing the last round
  • 23/24+1 capacity when used with 141.25mm Atlas/Checkmate/Staccato magazines (with competition-style basepads)
  • 29/30+1 capacity when used with a 171.25mm Atlas/Checkmate magazines (with competition-style basepads)
  • We recommend using a loading tool such as an UpLULA to achieve best results, and to fully load and unload the magazine a minimum of three times to set the spring in order to avoid malfunctions induced by excessive spring/feed lip pressure. 
  • Using this kit may still require you to tune your magazine tubes. CSRG is not responsible for malfunctions caused by out of spec or poorly tuned magazine tubes.

We have tested this spring kit in the following magazine tubes: 

  • Atlas
  • Checkmate/Staccato 
  • SVI

This is NOT compatible with MBX Extreme magazines.

Disclaimer: “2011” is a federally registered trademark of Staccato 2011, LLC. CSRG, LLC is not affiliated in any manner with, or otherwise endorsed by Staccato 2011, LLC or Check-Mate Industries, Inc.

Reviews

  • 3
    2011 spring and follower

    Posted by Daniel on Feb 23rd 2026

    Seem well made, definitely strong but no way it’ll hold 24 in Atlas mags, 23 is tight and hard to seat even after multiple uses.

  • 5
    1911 Double stack spring and follower

    Posted by Bryan Boughton on Feb 8th 2026

    These work great. USPSA 140mm compliant for LO.

  • 4
    Breaking in and capacity

    Posted by Michael Ishida on Feb 5th 2026

    I can verify that 24 rounds of 9mm fit into my Atlas magazines. It took a few rounds of loading/unloading to break in the spring. I have yet to test in live fire or a match so I'll try to follow up if there are any issues.

  • 5
    Shill

    Posted by Jake on Jan 25th 2026

    Great product but the owner is a serial hater on cmore

  • 5
    Use to avoid shitty companies

    Posted by 2011 Jesus on Jan 6th 2026

    Turned all of my Atlas mags into 24+1 reloadable. No longer need to deal with those **** at MBX. Last time I had an issue, they told me to just buy a new spring/follower combo. CSRG took care of me and it's actually reloadable instead of that blatant marketing lie MBX tells.

  • 5
    DS follower and spring

    Posted by Rob on Dec 27th 2025

    No more rounds falling under the follower Highly recommend for Atlas magazines Will buy again

  • 4
    Atlas 140 mm spring and follower 11coil

    Posted by Johnny on Dec 25th 2025

    Great product! Got my round count back to 24+1. Tested them through high apeed shooting and no failures to feed or malfunctions. One thing I noticed is it’s hard to press check when you have a fully loaded mag and one in the chamber. Not too big of a deal but worth noting. Awesome product I highly recommend to anyone using 140 mm mags.

  • 5
    2011 followers

    Posted by Dalton on Dec 7th 2025

    Holds 30+1 and 24+1 as advertised. Small break-in period for the 141 mags.

  • 5
    Why pick a different follower

    Posted by TJ on Nov 29th 2025

    These followers literally saved my life, only having 23 in the pipe wasn’t enough, it was the 24th round when I needed it most that let me hit the no shoot with an extra round. after installation my eyes may have become a little more squinty which is why I might’ve needed the 24th round but better safe than sorry. Fit perfectly in atlas tubes and I believe they are dyed with soy sauce which is why they work so good and reliably.