A full explanation on hammer spring weights, the difference on the "D" Spring for the 92 and PX4 and facts you should know when it comes to changing up your hammer spring in your Beretta 92/96/M9 and/or PX4's.

0:00-0:10 Intro
0:19-1:12 What hammer spring, we recommend the 13 pound
1:14-2:12 D model hammer springs
2:14-2:32 Lighter weight springs
2:32-2:50 Competition Springs
2:52-3:12 Springs for the handloader
3:14-3:35 Why we use chrome silicone
3:36-4:06 PX4 Springs
4:08-5:18 A Recap of spring weights