It depends on which model you have. The best way to find it is too check the owner's manual.
You need a gunsmith.
No. You cannot fire anything other than a .380 ACP cartridge out of a .380 handgun.
It is a .380 ACP caliber handgun produced by Colt Arms. It is a .380 ACP caliber handgun produced by Colt Arms.
No
No! DO NOT ATTEMPT!
NO!! Although the bullet diameter is the same, the case length is different and should not chamber in the 380 caliber handgun.
No, it cannot.
No, you cannot.
Best left to a gunsmith
No. Generally speaking, you can only use the correct caliber magazine for any given handgun, and .380 and 9mm are not interchangeable.
Take it to a gunsmith
The value of a Grendel 380 handgun can vary depending on the condition, age, and market demand. On average, you can expect to pay between $200 to $400 for a Grendel 380 handgun in good condition. It's recommended to check with local firearm dealers or online marketplaces for more specific pricing information.