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Geissele Maritime Bolt Catch

  • When the mission is critical and conditions are harsh, you want to know that all your gear is up to the task. The Geissele Maritime Bolt Catch has extended controls resulting in increased surface area and improved function - in any condition. Locking the bolt back (or releasing it) is easier than ever since the shooter does not have to break their grip to operate the Maritime Bolt Catch.

    Designed to be compatible with any mil-spec M16/M4 lower receiver. The textured surface ensures excellent grip and positive feedback for the shooters hand, even with gloves.

    -Made from heat treated 8620 steel.
    -Manganese phosphate coated

    Please Note: A mil-spec bolt catch spring and plunger are required for assembly and are NOT included.  If the Maritime Bolt Catch is replacing an existing mil-spec bolt catch, please use care when disassembling the component from your lower receiver as you will need these parts to install the Maritime Bolt Catch.
    Compatibility with billet AR-15 lower receivers is unknown. Please also note that the extended controls of the Geissele Maritime Bolt Catch will partially cover the pin hole for the hammer, a smaller punch may be required to push the hammer pin out of the receiver from the left side, and the hammer pin should only be installed from the right side of the receiver.

  • Manufacturer Part Number: 08-153

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  • The MSR Arms Advisor articles are intended to answer some of the most common shooter questions and assist our customers in making the best purchasing decision possible.
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  • No questions have been submitted regarding this product. If you have a question regarding this, or any of our other products, please submit them by emailing We will return your email promptly and post both the question and answer here for our other customers to view. Remember, there are no dumb questions... Thank you, MSR Arms!

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