This mod increases the ammunition capacity of the 10mm pistol by 4 rounds, from 12 to 16.
- Alexander, 188 trading post
- Arms merchant, 188 trading post
- Blake, Crimson Caravan Company
- Cliff Briscoe,in the Dino Bite gift shop at Novac
- Dale Barton, The Fort
- Great Khan armorer, Great Khan armory near Red Rock Canyon
- Vendortron, Gun Runners kiosk
Prior to patch 220.127.116.112, the 10mm extended mags were only worth 250 caps.
pc ps3 xbox360 Attaching this to the weathered 10mm pistol produces no cosmetic effect but the weapon still holds 16 rounds. [verified]