NEMO Arms Omen .300 Winchester 14 Rounds Rifle Magazine Black 14 OMN-LC110-1. This rugged polymer magazine was engineered from the ground up based on belted magnums. The mag features an anti-tilt follower 14 round capacity stainless steel spring. Magazine disassembles easily for cleaning. Weighs 7 ounces unloaded. Cartridges that can be used: .300 Winchester Magnum 7mm Remington Magnum and .338 Winchester Magnum. Magazine can accomodate a cartridge up to 3.50 in overall cartridge length. Specifications for NEMO Arms Omen .300 Winchester 14 Rounds Rifle Magazine: Manufacturer: NEMO Arms Color: Black Finish: Polymer Magazine Body Material: Polymer Fabric/Material: Stainless Steel Magazine Capacity: 14 Round Caliber: 7mm Remington Magnum .338 Winchester Magnum .300 Winchester Magnum Gun Make: Nemo Gun Model: Nemo Omen Gun Type: Rifle Quantity: 1 Package Contents: NEMO Arms Omen .300 Winchester 14 Rounds Rifle Magazine What firearm models does the manufacturer say NEMO Arms Omen .300 Winchester 14 Rounds Rifle Magazine is compatible with? The manufacturer suggests that NEMO Arms Omen .300 Winchester 14 Rounds Rifle Magazine is compatible with Nemo OmenNEMO Arms OMN-LC110-1: Omen .300 Winchester 14 Rounds Rifle Magazine Black 14