CARVER Custom M&P 9/40 170mm extended capacity base pads are CNC machined from aluminum and hard anodized for a long service life. This lengthens the magazine and allows up to 25 rounds(9MM) to your magazine with the factory follower. We provide a regular extra power spring to use with your follower. The unique locking mechanism allows a very solid attachment with a simple backing out of the discrete set screw. They are specifically designed to work with mag wells and fit the USPSA 170mm magazine gauge. The unique attachment design provides a low profile, sleek design that is very stable and easy to remove. * We include magazine spring and a .050 hex driver that makes installation and removal a breeze. 2.667oz
Please note: Bullet length and configuration will determine how many rounds are possible to be loaded with any mag extension. It's always best to sand a bevel on your followers when you are installing any mag extension to avoid the follower from getting hung up on the extension. If you have any questions, please feel free to call our Customer support line at 904-800-6333, ext 2.
**Disclaimer: As with all competition geared changes, always make sure you test and check your gear before you take it to a competition setting. With 140mm/170mm magazine configurations especially, check the magazine in a USPSA 140mm/170mm gauge to make sure it fits. With mass produced items like magazines, sometimes they can vary slightly from one to the next, often in the magazine lips that connect with the magazine extension/basepad.
