Great enhancement - Lancer Systems Beretta 1301 Competition Extension Tube

I installed this Lancer +5 on my Beretta 1301 Comp 21". I also added the magazine/barrel clamp from the same company. Installation of both was very straight forward and easy. I have taken it out twice with no problems whatsoever. Works like a charm. Since this upgrade was successful I do not foresee any problems when my 24" barrel arrives. I initially cut the spring to 16" past the extension and felt (no real proof) that it might be a bit tight so I cut another 1-1/2 inches off. In my mind it seems like it was I good decision but not cutting that extra off probably would have worked too.