The Mossberg OEM breacher barrel (brand part number 90017) is an 18.5-inch replacement barrel built for 12 gauge Mossberg 500 and Maverick 88 six-shot models, featuring a breacher-style muzzle end for forced-entry work. It carries a fixed cylinder bore, a factory bead front sight, and a matte blued finish matching factory-finished Mossberg pump guns. As a genuine factory-spec part, it drops in and functions exactly like an OEM Mossberg barrel. Note that it isn’t directly compatible with the 500 Cruiser or 500 Chainsaw variants, so confirm your specific model before ordering.

Key Specifications

• Chambered for 12 gauge.
• Barrel length measures 18.5 inches.
• Fits the Mossberg 500 and Maverick 88, six-shot models.
• Built with a breacher-style muzzle end.
• Bored as a fixed cylinder bore.
• Fitted with a bead front sight.
• Finished in matte blued.
• Manufactured as a genuine Mossberg OEM part.
• Not compatible with the 500 Cruiser or 500 Chainsaw variants.

Frequently Asked Questions

What makes this a breacher barrel? It’s built with a breacher-style muzzle end, distinct from a standard security barrel.

Will this barrel fit a 500 Cruiser? No, this barrel is not directly compatible with the 500 Cruiser or 500 Chainsaw variants.

Buy the Mossberg 12 Gauge 18.5 Inch Security Breacher Barrel with Bead Sight, Matte Blued

Get a genuine factory-spec breacher barrel. Order from our Mossberg lineup of shotgun barrels from a Lubbock, TX gun shop.