The Run N Gun Kit allows you to fire small arms such as pistols and SMGs while sprinting.
— In-game description
Run N Gun Kit is a Tier 1 PilotKit that appears in Titanfall. Using this kit allows the user to fire small arms while sprinting. Target locking is still enabled while sprinting with the Smart Pistol MK5. This is also a good combination with the C.A.R. SMG with Counterweight as it lets you keep your standing hipfire accuracy while sprinting.