This is a restricted capacity magazine for the SX1640S. (This magazine also fits the previous Para models: P1640 / S1640 / DX1640 / D1640 / TX1640 / T1640.)

It is nickel plated, has a plastic base pad, and holds 10 rounds of .40S&W ammo.

A high capacity (16-Round) version of this magazine is also available.