This mod increases the weapon's range by 100%. This is actually accomplished by increasing the velocity of the 40mm grenade by 100%, which theoretically allows the lobbing projectile to travel further.
- Arms merchant, 188 trading post
- Blake, Crimson Caravan Company
- Cliff Briscoe, Novac
- Dale Barton, The Fort
- Gloria Van Graff, Silver Rush
- Old Lady Gibson, Gibson scrap yard
- Vendortron, Gun Runners
Prior to patch 126.96.36.1992, the barrel was only worth 250 caps.