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Strike Industries Modular Bolt Catch for AR-15 Rifles

ID: 25959 (Part-SI-AR-MBC)
Strike Industries793811764178SI-AR-MBC25959
Strike Industries Modular Bolt Catch for AR-15 Rifles
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Strike Industries


Non-Export ItemShips Inside USA Only
This is an export-restricted item and can only be shipped within the United States. No international delivery for these items.


  • 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
  • Bolt catch buttons made from durable and lightweight polymer
  • Heat treated steel bolt catch base
  • Drop-in installation
The Strike Industries AR Modular Bolt Catch (MBC) 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, as we know the roll pins are always a fun time, 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.

Manufacturer: Strike Industries


Compatibility: Mil-Spec AR-15 lower receivers. This part may not be compatible with some billet upper receivers. It is also not compatible with any AR-10-spec receivers.
Material: Lightweight Polymer, Steel
Length (Standard / Oversized / Extended): 27.23mm / 30.08mm / 24.73mm
Width (Standard / Oversized / Extended): 10.03mm / 13.24mm / 21.44mm
Height (All Versions): 7.50mm
Package Includes: 1x Bolt Catch Base, 1x Bolt Catch Spring, 1x Bolt Catch Roll Pin, 1x Standard Button, 1x Oversized Button, 1x Left Extended Button, 1x Right Extended Button, 1x M2x8 Set Screw, 1x M2x12 Set Screw, 1x Hex Key

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