Length of Pull Lock Screw:
This thumbscrew replaces the set screw that comes with the Whiskey-3 Chassis to take out the play in the length of pull adjustment system.
With the thumbscrew, you can quickly eliminate any small wiggle in the system.
Fits: Whiskey-3 Chassis gen 2-4
Restrictions: Gen 2-3 require a longer screw, gen 4 requires a shorter screw, please specify which gen chassis you have