Repairing a Jennings 380 with a cracked barrel typically requires replacing the barrel, as cracks can compromise safety and performance. It's essential to source a compatible replacement barrel from a reputable supplier or manufacturer. Once you have the new barrel, disassemble the firearm following the manufacturer's guidelines, remove the cracked barrel, and install the new one. If you're not experienced with firearm repairs, consider seeking assistance from a qualified gunsmith to ensure safety and proper function.
4 inches including chamber.
50 or so
No longer made
M38
25-100 USD or so
25 - 100, if you can get someone to touch it.
.380 colt stick a pencil in the barrel, jamb a potato over the pencil onto the barrel, remove the pencil
Have it checkd by a good gunsmith before firing.
none
Take it to a gunsmith and ask for help
25-75 USD
Ask a gunsmith for help