This is the Mec-Gar SIG P228 9mm 15-round magazine.

This also fits older P229 pistols that accepts a flat-sided narrow magazine.

This will not fit P229 E2 pistols with accepts a wider-tapered P229-1 magazine.

• Increased 15-round capacity in a flush-fit design – features US Patent# 5,386,657 which provides two additional rounds without increasing magazine dimensions
• Carbon Steel Tube, heat-treated for strength
• Higher tensile music wire spring
• Polymer follower
• Removable steel butt-plate