Mossberg
Authorized Dealer
O.F. Mossberg & Sons is the oldest family-owned firearms manufacturer in America, building shotguns, rifles, and pistols since 1919 — now in its fourth generation of Mossberg family leadership. With over 12 million Model 500 pump shotguns produced and the 590A1 as the only pump-action shotgun to pass U.S. Military Specification 3443E, Mossberg is the name trusted by the military, law enforcement in 70 countries, and millions of American hunters and home defenders.
About Mossberg
O.F. Mossberg & Sons is the oldest family-owned firearms manufacturer in America, founded in 1919 by Swedish immigrant Oscar Frederick Mossberg and his sons Iver and Harold in New Haven, Connecticut. Now in its fourth generation under CEO A. "Iver" Mossberg Jr., the company has produced the best-selling shotgun in the world — the Mossberg 500, with over 12 million units built — and the only pump-action shotgun to meet U.S. Military Specification 3443E, the 590A1, trusted by the Army, Navy, and Marines.
The Mossberg 500, introduced in 1961, became the most-produced shotgun in history thanks to a combination of proven reliability, versatility, and one signature design choice: the ambidextrous tang-mounted safety. Positioned on top of the receiver where both left- and right-handed shooters can reach it instinctively with their thumb, the tang safety is immediately visible and can be disengaged without removing the shooting hand from the grip — a meaningful advantage in high-stress situations that competing designs with cross-bolt trigger guard safeties cannot match. Combined with dual extractors, twin anti-bind action bars, and a positive steel-to-steel lock-up, the 500 platform serves hunting, home defense, law enforcement, and military roles with equal reliability in 12 gauge, 20 gauge, and .410 bore.
The Mossberg 590A1 takes the 500 platform to military grade. Built with a heavy-walled barrel originally requested by the U.S. Navy to resist bending in shipboard doorways, all-metal trigger guard and safety, and a non-removable magazine tube, the 590A1 is the only pump-action shotgun to survive MIL-SPEC 3443E testing — over 3,000 rounds of full-power buckshot, repeated drop tests, with fewer than three malfunctions and zero parts breakages allowed. It remains the standard-issue pump shotgun across multiple branches of the U.S. military. The broader 590 family now includes the 590S that cycles 1.75-inch, 2.75-inch, and 3-inch shells interchangeably, and the 590M with detachable box magazines in capacities up to 20 rounds.
Beyond pump shotguns, Mossberg's lineup includes the 940 Pro semi- automatic developed with champion shooter Jerry Miculek — engineered to run 1,500 rounds between cleanings with nickel boron-coated internals — the budget-friendly Maverick 88 that shares the 500's receiver and action at roughly half the price, the Shockwave non-NFA 14-inch-barrel firearm that Mossberg pioneered, and the MC2c and MC2sc striker-fired 9mm pistols that marked Mossberg's return to handguns after 100 years. In rifles, the Patriot bolt-action with its user-adjustable LBA trigger is available in over 14 calibers, and the MVP is the only bolt-action rifle that accepts standard AR-15 magazines.
As an authorized Mossberg dealer, Keep Shooting carries a wide selection of Mossberg shotgun accessories, magazines, barrels, stocks, forends, and parts for the 500, 590, 590A1, Maverick 88, 930, 940, Shockwave, and MC pistol platforms. Whether you are upgrading a 500 for home defense, outfitting a 590A1 for duty, or adding capacity to your 590M with a detachable box magazine, every Mossberg product ships with fast delivery, easy returns, and our satisfaction guarantee — backed by the family that has been building America's shotguns for over a century.
Frequently Asked Questions — Mossberg
Yes, we maintain inventory of the most popular Mossberg products. Each product listing shows real-time stock status. If an item is temporarily out of stock, you can sign up for back-in-stock notifications on the product page.
Yes! All orders over $49.95 qualify for free shipping, including Mossberg products. Orders typically ship within 1–2 business days.
Keep Shooting offers hassle-free returns on Mossberg products. If you're not completely satisfied, contact our customer service team for a return authorization. All products must be in original, unused condition.
Yes, Keep Shooting is an authorized Mossberg dealer. All products are sourced directly and include full manufacturer warranty coverage.