TTI Base Pad for 2011 9mm/.38 Super Magazines +2 4mm Extension (Red)

The TTI 4mm Base Pad is a mid-profile magazine extension designed for 2011-style pistol magazines chambered in 9mm or .38 Super. Compatible platforms listed by the manufacturer include Staccato, Infinity, Springfield Prodigy, and Atlas magazines, though TTI notes it will function on all 2011-style magazines.

According to the manufacturer, this extension is recommended for use with the 140mm magazine. When used with the factory spring and follower, it increases capacity from 20 rounds to 22 rounds — a +2 increase — while still allowing the loaded magazine to fit within the USPSA 140mm gauge.

Key Features

• 4mm mid-profile extension
• +2 capacity increase (20 to 22 rounds) with factory spring and follower
• Fits 2011-style magazines in 9mm / .38 Super
• Compatible with Staccato, Infinity, Springfield Prodigy, and Atlas magazines per manufacturer
• Recommended for 140mm magazines
• Fits USPSA 140mm gauge
• Red finish

Available from ICB Firearms with fast nationwide shipping and local pickup in Saint Clair Shores, Michigan.