NUPROL High Torque Short Shaft Motor

If you've had motor issues and need a reliable replacement, here you go! The NUPROL High Torque Short Shaft Motor is an upgraded high torque motor for M4/AR-15 AEGs. This is the perfect upgrade part if you want to crank up your trigger response for some snappy semi-auto work or increase torque to handle high-power springs. The set includes a D-type pinion gear and pinion spring, both of which are pre-installed on the motor shaft.