This is a Mossberg factory replacement magazine for the Long Action 4x4 rifle in Magnum cartridges. Durable polymer construction ensures years of trouble-free service.  The Magnum/Long is compatible with the 7mm Remington Magnum, 300 Winchester Magnum and 338 Winchester Magnum calibers for 4x4 rifles.

Caliber:  7mm Rem Mag, .300 Win Mag, .338 Win Mag 

Capacity: 3 rounds

Finish: Black

Material: Polymer

Fits: Patriot and 4X4 models