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Order semi auto shotguns online from top brands like Weatherby, Military Arms, Mossberg, ATA Arms, and Beretta. Santan Reptiles & Firearms stocks fast-cycling, dependable semi auto shotguns built for waterfowlers, upland hunters, 3-gun competitors, and home defenders who want quick follow-up shots and reduced recoil. From sleek hunting models to tactical defense guns and competition-ready scatterguns, we carry a wide range of gauges and configurations to fit every shooter and purpose. Stock up on shotgun shells and shotgun magazines to keep your shotgun ready, then fine-tune your setup with gun parts. Round out your kit with pump action shotguns, over under shotguns, side by side shotguns, single shot shotguns, and bolt action shotguns from our full inventory.
Shop semi auto shotguns online by comparing models, checking current availability, and reviewing specifications such as caliber, capacity, barrel length, and sight configuration. Picking the right self-loading shotgun depends on your intended use, gauge preference, and the operating system that fits your hunting, sporting, or defensive role.
Use these pointers to narrow down your selection:
Get semi auto shotguns online or visit the gun shop in Maricopa, Arizona to shoulder different platforms, cycle the actions, and compare barrel and sight options before committing. Santan Reptiles & Firearms serves customers in the nearby cities of Casa Grande and Chandler, stocking dove and waterfowl field guns, three-gun competition platforms, defensive setups, and traditional sporting models for shooters across experience levels.
Federal law requires semi auto shotgun buyers to be at least 18 years old when purchasing a long gun from a licensed dealer, and Arizona requires the standard NICS background check at the point of sale through any FFL transfer. Buyers must complete ATF Form 4473 at the time of transfer, and any disqualifying factors under federal or state law will block the sale. Arizona does not impose a state-level purchase permit, registration, or magazine capacity requirement for semi auto shotguns.
Federal regulations limit shotgun magazine capacity to three total shells when hunting migratory waterfowl, requiring most semi auto shotguns to be plugged for legal use, and Arizona Game and Fish Department rules add season-specific shot type and capacity restrictions. Transport semi auto shotguns unloaded in a case during travel, store them in a secure cabinet or safe when not in use, and contact the shop with questions about availability, transfers from out-of-state dealers, or special-order configurations.
A semi auto shotgun uses energy from each fired shell, either gas pressure tapped from the barrel or inertia from recoil, to cycle the bolt rearward, eject the spent hull, and chamber a fresh round from the magazine. The shooter only needs to release and re-press the trigger between shots.
Gas-operated shotguns tap propellant gas from the barrel to drive a piston that cycles the action, which softens recoil but adds carbon and components to clean. Inertia-driven shotguns use the rearward push of recoil against a spring-loaded bolt to cycle, keeping the action cleaner and lighter at the cost of a sharper felt recoil impulse.
Modern semi auto shotguns can be highly reliable for home defense when paired with quality buckshot loads that fully cycle the action, though pump shotguns remain the most universally forgiving choice across shell types. Confirming reliability with your chosen defensive load is essential before counting on the setup.
12 gauge is the most popular gauge for semi auto shotguns, offering wide ammunition availability and effective performance across hunting, sporting, and defensive roles. 20 gauge is a strong second choice for shooters seeking lighter recoil and reduced overall weight.
Some gas-operated semi autos cycle reliably with light target loads while others, particularly inertia-driven designs, may require heavier loads to fully operate the action. Always check the manufacturer’s recommended minimum dram or velocity specifications.
Semi auto shotguns benefit from a thorough cleaning every 250 to 500 rounds depending on the action type, with gas-operated models needing more frequent attention to the piston, gas ports, and magazine tube. Hunting and competition use in dusty desert conditions calls for more frequent maintenance.
Semi auto shotguns are legal for waterfowl hunting in Arizona and federally, provided the magazine is plugged to limit total capacity to three shells (one in the chamber and two in the magazine) and only non-toxic shot is used. Always confirm current rules in the federal and state hunting regulations.
Arizona does not require a separate purchase permit for semi auto shotguns, but every retail shotgun sale must go through a licensed dealer with a NICS background check. Buyers must be at least 18 years old when purchasing a shotgun from a dealer.
