--- title: "Geissele Automatics Maritime Bolt Catch 08-153" description: "Enhanced mil-spec bolt catch for M16/M4-compatible lower receivers, featuring extended checkered controls and a heat-treated 8620 steel construction." canonical_url: "https://www.kygunco.com/product/geissele-maritime-bolt-catch-08-153" meta: author: KYGUNCO "og:description": "Enhanced mil-spec bolt catch for M16/M4-compatible lower receivers, featuring extended checkered controls and a heat-treated 8620 steel construction." "og:image": "https://cdn.kygunco.com/assets/products/256298/thumbnail.jpg?v=1718634551" "og:image:height": "500" "og:image:width": "500" "og:title": "Geissele Automatics Maritime Bolt Catch 08-153" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Gun Parts](https://www.kygunco.com/category/shooting/gun-parts) / [Handgun & Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts) / [Rifle Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts) / [Upper Receiver Parts](https://www.kygunco.com/category/shooting/gun-parts/handgun-and-rifle-parts/rifle-parts/upper-receiver-parts) / GSS-08-153 ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/256298/main.jpg?v=1718634551) For illustration purposes only, this image may not be an exact representation of the product. # GEISSELE Maritime Bolt Catch 08-153 The Geissele Maritime Bolt Catch is an enhanced mil-spec replacement for lower receivers designed to accept an M16/M4 carbine bolt catch. Its extended, aggressively checkered controls provide increased surface area for bolt lock and release operation, including easier access for left-handed shooters. It is made from heat-treated 8620 steel with a manganese phosphate coating. See Price In Cart ** 4 interest-free payments of **$7.50** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** Online In Store ** Flat Rate $13.94 for every 25 lbs. Shipping to HI & AK may incur additional fees. ** Ships To Your Home Handled by our expert shippers in Bardstown, KY. Item # 256298 Style GSS-08-153 UPC 817953022429 Condition New Manufacturer [Geissele Automatics](https://www.kygunco.com/brand/geissele) Weight 1 lb The Geissele Maritime Bolt Catch is designed with the warfighter in mind and will work with any lower receiver designed to accept a mil-spec M16/M4 Carbine bolt catch. The increased surface area promotes ease of function when locking back the bolt or releasing the bolt after a magazine change. In addition, the extended controls add an increased functionality for left handed shooters who no longer have to break their grip to manipulate the bolt catch. Left handed shooters can easily reach the controls using the index finger of their left hand making magazine changes and locking the bolt back much more fast and efficient. Aggressive checkering covers the surface of the levers giving the Geissele Maritime Bolt Catch a textured surface that enables positive feedback to the shooters hand when being used with gloves or at night. Manufactured from properly heat treated 8620 steel and manganese phosphate coated, the Geissele Maritime Bolt Catch is intended to serve as an enhanced mil-spec replacement and assist in giving our warfighters overmatch capability with the M16/M4 carbine platform. Shop with KYGUNCO for the best selection, competitive pricing, and exceptional customer service. Experience the difference that comes with buying from a trusted outdoor retailer with over 20 years of experience in the industry. ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## More from Geissele Automatics ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/geissele-maritime-bolt-catch-08-153#webpage","@type":"WebPage","description":"Enhanced mil-spec bolt catch for M16/M4-compatible lower receivers, featuring extended checkered controls and a heat-treated 8620 steel construction.","name":"Geissele Automatics Maritime Bolt Catch 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