Product Description The Taran Tactical Innovation (TTI) 4mm Base Pad is a mid-profile magazine extension engineered for 2011-style pistols chambered in 9mm and 38 Super. Compatible with Staccato, Infinity, Springfield Prodigy, Atlas, and other 2011-platform magazines, this base pad effortlessly boosts round count while preserving competition-legal dimensions. Sporting a hard coat anodized finish in Titanium Gray, the STVB-4G05 delivers long-lasting durability and a refined appearance on your competition pistol. Using your factory spring and follower, it adds +2 rounds of capacity, bringing a standard 20-round 140mm magazine up to 22 rounds, all while still fitting within the USPSA 140mm gauge. Product Highlights Mid-profile 4mm extension specifically recommended for the 140mm 2011-style magazine Adds +2 rounds of capacity (20 to 22 rounds) using the factory spring and follower USPSA-compliant design fits within the 140mm gauge for legal competition use Compatible with Staccato, Infinity, Springfield Prodigy, Atlas, and all 2011-style 9mm/38 Super magazines Hard coat anodized Titanium Gray finish provides exceptional durability and a premium look Specs Brand: Taran Tactical Innovation MPN: STVB-4G05 UPC: 810003108654 Type: Magazine Extension / Base Pad Caliber Compatibility: 9MM / 38 Super Compatible Platforms: 2011-style magazines (Staccato, Infinity, Springfield Prodigy, Atlas) Profile Height: 4mm (Mid Profile) Capacity Increase: +2 Rounds Recommended Magazine: 140mm 2011 Magazine Finish: Hard Coat Anodized Color: Titanium Gray USPSA Compliant: Fits 140mm gauge Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer.