MGWIT40LF10B : WITNESS/TANFOGLIO - LARGE FRAME 10rd Blued Magazine .40S&W

Optimum
The name says it all.

No matter the conditions, Optimum magazines deliver superior performance.
They start with a staggered column tube configuration for more positive feeding. They boast a redesigned follower and spring to increase storage capacity, wich increases firepower without the need for an extended mag that snags on draw.
Guide ribs are positionned smarter to allow for easier transition of the ammo while preventing damage to the cartridge case.
And thanks to special anti-friction coating, Optimum mags load faster and feel smoother.