This is a 30-round 9mm B&T USW-A1 extended magazine pinned to 10-round for Canada.

Constructed of rugged steel with blued finish, this B&T USW-A1 magazine offers superior durability and corrosion resistance in harsh and demanding conditions.

The high-tensile compression steel spring and polymer follower work together to ensure smooth feeding and proper cartridge alignment for reliable performance shot after shot.