Professional Series item 50798 with a 14-inch heavy-wall barrel, compact stock, and 5+1 capacity. Mossberg's press table calls it a six-shot configuration. GrabAGun's AvantLink feed title says 5 rounds, while the maker specifies 5+1; this entry follows the maker's exact capacity field.
The 590A1 Professional Series Compact uses a 14-inch heavy-wall barrel with a cylinder bore and a compact stock that adjusts from 12 to 13 inches. Mossberg lists a 32-inch overall length and 5+1 capacity with 2.75-inch shells. Its receiver accepts included RMR, Docter, and Leupold-footprint adapter plates.
0-10 Scale Across 8 Axes

Magpul
Magpul SGA Stock (Mossberg 500/590/590A1)

Mesa Tactical
Mesa Tactical Urbino Pistol Grip Stock (Mossberg 500/590)

Hogue
Hogue Tamer Pistol Grip (Mossberg 500/590)

Nordic Components
Nordic Components MXT +2 Mossberg 590 Extension

Esstac
Esstac 7-Round Shotgun Card

Viking Tactics
Viking Tactics VTAC Original Sling
Add optics, lights, and accessories to build your perfect Mossberg 590A1 Professional Series Compact 14-inch SBS.