Make sure to blue Loctite the screw that holds that stock in place. The geniuses that installed the Knoxx stocks on the 870s in our squad cars didn't use blue Loctite, and the screws loosened up during a qualification and the stocks started jiggling and flopping around, and it really affected our accuracy. This happened to every shotgun we had on the firing line.
DinanTronics Stage 1 F30 328i M Sport
Dinan 20" Black Performance Wheels
Gunfighter Training Development and Evaluation
AR15/AR10 Armorer/Advanced Armorer
Gunfighter Training YouTube Channel