I recently came across a very informational stampede modification guide while browsing the Reddit Nerf community. With Reddit's mechanics, the guide will not be seen there for long, but it is too useful to be forgotten, so I will link it here for long-term viewing and utilization.
Disclaimer: I did NOT Write this Post. I am merely linking it here for others to use and refer to while they are modifying their blasters. All credit is due to Mortality_Nerf.