The Retay USA ACE is a 20 Gauge semi-auto shotgun (Retay USA part no. B-ACEMX7-28) built around the brand’s Inertia Plus operating system, a low-maintenance action prized by waterfowlers who need dependable cycling in wet, muddy conditions. Wrapped in a Mossy Oak Max-7 finish that blends into marsh and timber alike, this ACE pairs a soft-shooting 20 gauge platform with the reach of a 28-inch barrel. It’s equally at home in a duck blind at first light or a dove field come September, giving hunters a lightweight gun that still handles heavier 3-inch loads with ease. A shim kit and adjustable length of pull mean the stock can be tuned to fit the individual shooter rather than the other way around.

Key Specifications

• Chambered in 20 Gauge, giving hunters lighter recoil than a 12 gauge without giving up effective range on birds.
• Accepts shells up to 3 inches, covering the bulk of factory dove, upland, and waterfowl loads.
• Runs on Retay’s Inertia Plus operating system, a mechanically simple action that keeps cycling reliable through mud, rain, and long hunts with less cleaning.
• Holds 3+1 shells, giving a working capacity of four rounds between reloads.
• Wears a 28-inch barrel with an optimized, lengthened forcing cone for tighter, more consistent shot patterns.
• Finished in Mossy Oak Max-7 camo across the stock and receiver for cover in timber and marsh alike.
• Comes with a single fiber-optic bead front sight for a fast, bright sight picture in low light.
• Uses a reversible push-button safety that can be set up for right- or left-handed shooters.
• Features a removable, push-button trigger group that drops free for fast field-stripping and cleaning.
• Ships with a 14.5-inch length of pull and a shim kit so the stock can be tuned to the shooter’s fit.

Frequently Asked Questions

What gauge is the Retay USA ACE chambered in? It is a 20 Gauge shotgun built to run 2 3/4-inch and 3-inch shells.

How many shells does the ACE hold? The magazine holds 3 shells plus one in the chamber, for a 3+1 capacity.

Can the stock fit be adjusted? Yes, the 14.5-inch length of pull can be changed using the included shim kit to better match the shooter.

Buy the Retay USA ACE 20 Gauge Semi-Auto Shotgun

Waterfowlers and upland hunters who want a dependable inertia-driven 20 gauge without a harsh recoil impulse will find the ACE hard to beat. Retay USA builds guns for hunters who put rounds through their guns in every condition Mother Nature offers, and the Max-7 finish keeps you concealed while doing it. Browse our full lineup of semi-auto shotguns and order the ACE from our Lubbock, Texas gun shop for fast, insured shipping to your local FFL.