Welcome to MD's Gun Repair, your premier source for OEM, factory-new, and hard-to-find obsolete Mossberg components. Whether you are rebuilding a vintage bolt-action rimfire, servicing a field shotgun, or upgrading a home-defense build, we carry the internal safety levers, extractors, lifters, springs, and action bars you need to ensure complete reliability. Browse our inventory by model above or use our contact us page for questions.
Frequently Asked Questions About Mossberg Parts
Are Mossberg 500 and Maverick 88 parts interchangeable?
Yes, most Mossberg 500 and Maverick 88 parts are fully interchangeable. The Maverick 88 is a budget-friendly variant of the Mossberg 500, sharing the exact same receiver dimensions, barrels, magazine tubes, and stocks. The two primary exceptions are the trigger group (the Maverick 88 uses a cross-bolt safety on the trigger guard, while the Mossberg 500 uses a top-tang safety).
Why is my Mossberg 500 dropping shells or failing to feed?
Double-feeding or dropping shells from the magazine tube is typically caused by a worn or bent cartridge stop or cartridge interrupter. These two spring-steel bars sit inside the receiver slots and regulate shell release. Over time, heavy use or debris accumulation causes them to lose tension or stick. Cleaning the internal receiver tracks or replacing these bars with factory-spec Mossberg cartridge stops will resolve shell timing and feeding complications.
Can you swap a Mossberg 500 barrel with a Mossberg 590 barrel?
No, standard Mossberg 500 and 590 barrels are not directly interchangeable due to completely different magazine tube attachment mechanisms. The Mossberg 500 barrel secures via a fixed screw that threads directly into the closed end of the magazine tube. The Mossberg 590 features an open-ended magazine tube secured by a screw-on end cap or extension. To cross-match them, you would have to replace the barrel, the magazine tube, and the magazine spring simultaneously.
What is the difference between old-style and new-style Mossberg lifters (elevators)?
Mossberg modified its shotgun lifter (elevator) design to increase reliability and minimize field snags. Older configurations utilized a narrower profile that could occasionally bind with specific hull lengths. Modern factory-replacement Mossberg elevators feature optimized geometry and a wider framework to ensure smooth shell lifting from the magazine to the chamber. Always confirm your gauge (12ga, 20ga, or .410) as lifters are frame-size specific.
Why is my Mossberg safety switch stuck or loose?
Mossberg's signature top-tang safety switch commonly malfunctions due to a cracked plastic safety button, a weak detent spring, or a missing detent ball. Because factory safety buttons on standard models are molded plastic, they can crack under impact, causing the safety to bind. Upgrading to a metal safety button and replacing the small interior detent spring restores a crisp, positive click between safe and fire positions.
Are Mossberg 500 and Maverick 88 parts interchangeable?
Yes, most Mossberg 500 and Maverick 88 parts are fully interchangeable. The Maverick 88 is a budget-friendly variant of the Mossberg 500, sharing the exact same receiver dimensions, barrels, magazine tubes, and stocks. The two primary exceptions are the trigger group (the Maverick 88 uses a cross-bolt safety on the trigger guard, while the Mossberg 500 uses a top-tang safety).
Why is my Mossberg 500 dropping shells or failing to feed?
Double-feeding or dropping shells from the magazine tube is typically caused by a worn or bent cartridge stop or cartridge interrupter. These two spring-steel bars sit inside the receiver slots and regulate shell release. Over time, heavy use or debris accumulation causes them to lose tension or stick. Cleaning the internal receiver tracks or replacing these bars with factory-spec Mossberg cartridge stops will resolve shell timing and feeding complications.
Can you swap a Mossberg 500 barrel with a Mossberg 590 barrel?
No, standard Mossberg 500 and 590 barrels are not directly interchangeable due to completely different magazine tube attachment mechanisms. The Mossberg 500 barrel secures via a fixed screw that threads directly into the closed end of the magazine tube. The Mossberg 590 features an open-ended magazine tube secured by a screw-on end cap or extension. To cross-match them, you would have to replace the barrel, the magazine tube, and the magazine spring simultaneously.
What is the difference between old-style and new-style Mossberg lifters (elevators)?
Mossberg modified its shotgun lifter (elevator) design to increase reliability and minimize field snags. Older configurations utilized a narrower profile that could occasionally bind with specific hull lengths. Modern factory-replacement Mossberg elevators feature optimized geometry and a wider framework to ensure smooth shell lifting from the magazine to the chamber. Always confirm your gauge (12ga, 20ga, or .410) as lifters are frame-size specific.
Why is my Mossberg safety switch stuck or loose?
Mossberg's signature top-tang safety switch commonly malfunctions due to a cracked plastic safety button, a weak detent spring, or a missing detent ball. Because factory safety buttons on standard models are molded plastic, they can crack under impact, causing the safety to bind. Upgrading to a metal safety button and replacing the small interior detent spring restores a crisp, positive click between safe and fire positions.