Extended Capacity Base Pad for SDVE

This Extended Capacity Base Pad is a drop-in replacement floorplate for Smith & Wesson SD, SDVE, and Sigma-series magazines. It increases 9mm standard-capacity magazines by three (3) rounds and .40 S&W magazines by two (2) rounds. The primary function is to extend reload capacity without altering the magazine spring or follower geometry, providing a simple mechanical solution for shooters who need more rounds between reloads in competition or training. The base pad adds minimal length to the magazine while maintaining reliable feeding characteristics.

Compatibility

• Smith & Wesson SD (9mm) – standard capacity magazines
• Smith & Wesson SDVE (9mm & .40 S&W) – standard capacity magazines
• Smith & Wesson Sigma series (.40 S&W) – standard capacity magazines
• Smith & Wesson Sigma “C”, “F”, “VE” models
• Smith & Wesson SD 2.0 Series – 16-round 9mm magazines
• Will not fit 10-round restricted-capacity magazines

Key Features

• Adds +3 rounds to 9mm standard magazines; +2 rounds to .40 S&W standard magazines
• Caliber-specific design – select the correct option for 9mm or .40 S&W
• Bottom surface dimpled for tactile identification in low-light or under stress
• Direct replacement – no permanent modification to magazine body or follower
• No spring or follower replacement required; uses factory magazine internals

Install Difficulty: 1/5

No tools required. Remove factory base pad by pressing the retaining pin, slide off the old pad, install the new pad, and reinsert the pin. Total time under two minutes per magazine.

FAQ

Will this work with my factory 10-round magazine?

No. This base pad is designed for standard-capacity 9mm and .40 S&W magazines only. It will not fit 10-round restricted-capacity magazines due to different magazine body geometry.

Do I need to change my magazine spring or follower?

No. The base pad does not require replacement of the factory spring or follower. The +3/+2 capacity gain is achieved purely through the extended floorplate geometry.

Is this legal in my state?

This product is not for sale to residents of California, Oregon, Rhode Island, or Washington. Check your local laws before ordering. This component is intended for standard-capacity magazines only.

All orders ship within one business day. This product carries a manufacturer warranty against defects in materials and workmanship. If you have compatibility questions for a specific model variant not listed, contact our support team before ordering.