Originally Posted by Beretta25
Haha, but if only you knew...Getting the gun away from him is NOT an option lol...so the trimming option sounds like a great idea, what would I trim it down with?
Got a pair of dikes or hard wire cutters of some sort? Got a dremel or a grinder?
Most firing pins are aluminum, thin steel, and rarely, but sometimes, titanium.
In any event, there is a big end and small end. The small end goes through the boltface, so that is the part you want to trim. Your goal that the firing should not be able to go through the bolt face, so that it can't punch the primer, and thus becomes incapable of setting of any sort of live round.
Please double check this before assuming what you trimmed is enough. .25" should be MORE than plenty, but ALWAYS double check any work you do to a firearm to make sure what you think is gonna happen, is what REALLY does happen....
In your case, if you are not near a range, and can't have the weapon out for long, you can make the mod and use a primed case with NO POWDER AND NO BULLET in it. This means you pull the round, dump out the powder, preferably with a bullet puller like the one from RCBS, and you are chambering only a piece of brass with a live primer.
If you got the mod right, you pull the trigger and nothing happens.
If you didn't trim enough, you pull the trigger and the primer will fire, which will make a loud noise and probably startle you.
Of course if you have a micrometer or similiar piece of equipment, you can measure the firing pin and the projection through the boltface and have a real good idea what to do.
The easier option is just pull the firing pin all together. This assumes that the person in question would not disassemble the bolt and find the firing pin missing. The benefit of a trimmed pin is that it can fool you if you don't know what you are looking for. If the pin is gone, and you are looking for it, well, that would be bad....