Timney Triggers Ultimate Builder's Kit, Pivot Trigger, 2.5-3 LB Pull Weight, Fits GLOCK Generation 3/4, NP3 Coated, Black AlphaGlockPivot3-4-UBK-Black Timney Triggers has been around for nearly 80 years. The Timney Alpha Competition for Glock Series of triggers answers the call for a trigger that matches the reliability of the Glock system" while maintaining the same great feel of a Timney trigger.