SIG SAUER MCX-SPEAR .277 Fury 6.5mm Creedmoor 7.62x51mm NATO 20 Round Pistol Coyote Tan 20. This magazine has been engineered to withstand the extreme demands of the U.S. Army and has been specifically designed to deliver increased performance while using a suppressor. The MCX-SPEAR offers next generation performance plus the capability of the U.S. Armys XM7 rifle in a civilian variant. Specifications for SIG SAUER MCX-SPEAR .277 Fury 6.5mm Creedmoor 7.62x51mm NATO 20 Round Pistol: Manufacturer: SIG SAUER Color: Coyote Tan Fabric/Material: Steel Magazine Capacity: 20 Round Caliber: .277 Fury 7.62x51mm NATO 6.5mm Creedmoor Gun Make: SIG Sauer Gun Model: Sig Sauer MCX-SPEAR Quantity: 1 Package Contents: SIG SAUER MCX-SPEAR .277 Fury 6.5mm Creedmoor 7.62x51mm NATO 20 Round Pistol SIG SAUER Infinite Guarantee What firearm models does the manufacturer say SIG SAUER MCX-SPEAR .277 Fury 6.5mm Creedmoor 7.62x51mm NATO 20 Round Pistol is compatible with? The manufacturer suggests that SIG SAUER MCX-SPEAR .277 Fury 6.5mm Creedmoor 7.62x51mm NATO 20 Round Pistol is compatible with Sig Sauer MCX-SPEARSIG SAUER MAGSPEARMULTICOY: MCX-SPEAR .277 Fury 6.5mm Creedmoor 7.62x51mm NATO 20 Round Pistol Coyote Tan 20