The Killer Innovations Sig P320 Compensator should be able to fit and function without the use of loctite. However, blue loctice is included is included with this comp and is recommended for use when installing the comp. You can find the installation instructions linked below:
https://killer-innovations.com/wp-content/uploads/2021/08/KI-SIG-P320-COMP-9MM-INSTRUCTIONS-8-19-21.pdf