You're best advised to have a gunsmith perform this work.
Start by taking the gun to a gunsmith. There are different firing pins for different guns.
It is probably the pen gun. It is about the size of a pen. BUT, ity is not very good shooting only about 30 feet. the eliminator is a small gun that gets 60 feetish.
the Nerf dart gun
Perfect or comfortable is the meaning behind snug as a gun.
No one knows what the purpose for the stock pen, theories are that the stock pen was used for extra guns,gun powder etc.
You might try Gun parts Corp.or try the internet,gun stores in your area etc.
A small pen gun and cigarette box gun were the smallest guns used by spies and Underground Resistance warriors.
It is time to replace the pen drive
Just dont
Good luck getting suspended/expelled.
pen island
1. Write with it - which is it's intended purpose.2. Make a pen gun.3. For more options go to you tube in search it up.