Forward
Recently, I’ve had a few requests to do a disassembly/reassembly guide for the trigger pack of the Benelli M4. Today I had some spare time to kill, so I decided to try to tackle it. This manual can be used as a guide for pretty much any Benelli shotgun out there.
Not everyone needs to do a full disassembly. They may be doing 922® upgrades or simply changing out their safety button. Perhaps you want to have your carrier welded up? You can jump around through the photographs and see what is needed to get the assembly apart to do your job.
In this tutorial, many of the images will have lines on them indicating what you cannot see inside of the parts. I used the color blue to indicate the position of the tools such as punches. I used green to indicate the position of the roll pin or other type of assembly pins. White and black indicate the general assembly.
Note: The trigger pack I am using is a spare complete trigger pack with a Geisselle hammer installed.
The Tools
Before proceeding into this tutorial, I would advise that you have some proper gunsmith grade tools. You do not need hundreds of dollars’ worth of tools, but you do need the basics to prevent marring your work. Proper tools will also keep the swearing to a minimum. This job we’re about to perform will cause some swearing. You will be required to manipulate many small spring loaded pieces that must be aligned perfectly. It might be pretty miserable to perform if you have big sausage fingers. Take this under advisement before you’re forced to make the walk of shame to the local gunsmith with a shoe box full of parts. Naturally, if you get stuck somewhere, get a hold of me and I’ll help you in any way that I can. If you’re still stuck or have broken something, you can send the assembly to me to repair. All I will charge is the cost of shipping it back and the cost of any needed parts.
The same applies if you want something repaired or if you want 922® compliance parts installed and do not feel you can complete the task. I’ve done many installs for locals and other members on this forum in the past. If I have the parts on hand or you are sending them with the item, I usually have the work back in the mail to you the next morning.
1/16 Punch
3/32 Punch
Snap Ring Pliers
Dental Pick
Alignment Tools
Assembly Block
Brass Hammer
Rawhide Mallet