Mesa Tactical LEO Mossberg 500 Stock Adaptor 12 Gauge Shotgun USA MADE
$95.00
Finally we have a CONSISTENT SUPPLY of LEO Adaptors!! Most have been sold out for MONTHS. Listing is for the adaptor only. No stock, grip, or tube included. These are our most ELITE adaptors on the market. Used by Law Enforcement and Military agencies nationwide. The REAL DEAL. Shoot us a line if you need anything or have any questions. We are NICE GUYS!!!
OUR WARRANTY: “You break it, destroy it, or throw it off a CLIFF……..We replace it for LIFE!!”
LEO® Gen II Telescoping Stock Adapter and Conversion Kit For Moss 500/590A1/Mav88 (12-GA And 20-GA)
Use Mesa Tactical’s collapsible stock kits and adapters to install AR-15 adjustable buttstocks and pistol grips onto the venerable Mossberg 500 shotgun platforms for the ultimate in tactical shotgun configuration performance.
The LEO aluminum adapter kits include everything necessary to retrofit Mossberg pump shotguns with most AR-15 style stocks and pistol grips. Our adapter kits allow customers to add their own AR-15 stock assemblies as desired. LEO® telescoping stock adapters, feature a stock elevation about an inch lower than the High-tube adapters and so don’t require sighting or aiming aids.
The concept behind the telescoping stock system is simple: the shotgun stock is replaced by an adapter, which attaches to the rear end of the shotgun’s receiver and it, in turn, mimics the rear end of an AR-15 lower receiver, into which an AR-15 receiver extension tube can be threaded. The AR-15 telescoping stock and pistol grip can then be reliably attached.
Our LEO stock adapters are investment cast aircraft aluminum. They are then CNC machined and a powder-coated finish.
The LEO adapter is our most basic, best-selling model, and features an optimal stock elevation allowing the use of iron sights or even the bead sight. All LEO adapters accept optional push-button sling swivels, and Remington 870 LEO adapters can accept stamped steel sling loop and hook loops (not included).
At Shotgun Stocks, we strive to process and ship your order as quickly as possible.
Order Processing
- Orders are typically processed within 1–3 business days after payment confirmation.
- Orders placed on weekends or holidays will be processed on the next business day.
- During peak sales periods, processing times may be slightly longer.
Shipping Methods
We ship using trusted carriers to ensure safe and reliable delivery. Available shipping options and rates will be displayed during checkout.
Estimated Delivery Times
- United States: 3–7 business days
- International Orders: 7–21 business days (depending on destination and customs processing)
Please note that delivery times are estimates and may vary due to carrier delays, weather conditions, or other circumstances beyond our control.
Order Tracking
Once your order has been shipped, you will receive a shipping confirmation email containing your tracking information so you can monitor your package's progress.
International Shipping
International customers are responsible for any customs duties, taxes, import fees, or other charges imposed by their country's regulations.
Shipping Address Accuracy
Please ensure that your shipping address is accurate and complete at checkout. We are not responsible for delays or lost shipments resulting from incorrect address information.
Damaged or Lost Packages
If your package arrives damaged or is lost in transit, please contact our customer support team within 7 days of delivery (or expected delivery date), and we will work with the carrier to resolve the issue.
Questions?
If you have any questions regarding shipping or delivery, please contact our support team before placing your order. We are happy to assist you.

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