Strike Industries

Strike Industries AR Modular Bolt Catch

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Strike Industries AR Modular Bolt Catch

The Strike Industries AR Modular Bolt Catch offers a quick and simple way to configure your button preference to one of four (4) included options. No need to remove the bolt catch base if you want to change the button. Using the provided hex key, remove the set screw to slide the current bolt catch button off the base and then slide the button on you want. Secure using the correct provided set screw and you are good to go. The SI AR MBC comes with included Standard, Oversized, Left Extended and Right Extended buttons so you always have the modularity to swap at home or at the range. Each bolt catch button is textured for positive feel and manipulation of your AR for enhanced ergonomic control. The provided bolt catch buttons are made from lightweight polymer paired with a heat treated steel bolt catch base. Included as well is a bolt catch roll pin and spring to make this package as complete as possible to give you everything out of the package for a drop-in installation. The Strike Industries AR Modular Bolt Catch gives you the ability meet various setups to your personal liking or specific mission in this complete assembly.

Package Contents:

  • Bolt catch base
  • Bolt catch spring
  • Bolt catch roll pin
  • Standard button
  • Oversized button
  • Left extended button
  • Right extended button
  • M2x8 set screw
  • M2x12 set screw
  • Hex key

Product Features:

  • Modular design for quick and simple bolt catch button replacement
  • Swap out the button with the bolt catch base still installed
  • Standard, Oversized, Left Extended and Right Extended included buttons
  • Textured for positive feel and manipulation
  • Bolt catch buttons made from durable and lightweight polymer
  • Heat treated steel bolt catch base
  • Drop-in installation


  • Mil-Spec AR-15 lower receivers


  • AR-10 lower receivers
  • May not be compatible with some billet upper receivers
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Warranty Information

This kit comes with our LIMITED LIFETIME WARRANTY* in the rare case you need one. Each part is personally inspected for quality and hand packaged to ensure your satisfaction. *Note: Warranty only valid when used with mil-spec lower, warranty does not cover use with 80% lower.
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