Anyone Know What May Be Causing the "Sticking" in Glock Posted March 28 Im not sure Id even worry about it. Has the pistol ever had a failure to feed or go into battery? Ive ran the same two 11lb/13lb ISMI recoil springs in my G34 for ~15k to ~20k rounds and never experienced problems. Especially with a full mag inserted, that's a lot to ask. The point of a reduced power recoil spring is to not have the slide slam home as hard as factory.